8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C.  20549

___________

FORM 8-K

CURRENT REPORT

Pursuant To Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) September 29, 2017

TC PipeLines, LP

(Exact name of registrant as specified in its charter)

Delaware	001-35358	52-2135448
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer  Identification No.)

700 Louisiana Street, Suite 700 Houston, TX	77002-2761
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code (877) 290-2772

(Former name or former address if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company	☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.	☐

Item 1.01.  Entry into a Material Definitive Agreement.

Second Amendment to Term Loan Agreement

On September 29, 2017, TC PipeLines, LP (the “Partnership”) entered into an amendment, effective as of October 2, 2017 (the “Second Amendment to Term Loan Agreement”), to the Term Loan Agreement dated as of July 1, 2013, as amended by that certain First Amendment to Term Loan Agreement, dated as of November 10, 2016 (the “Term Loan Agreement”), by and among the Partnership, the banks and other financial institutions party thereto (the “Lenders”) and SunTrust Bank, as administrative agent for the Lenders (the “Administrative Agent”). The Second Amendment to Term Loan Agreement amends the Term Loan Agreement to, among other things:

· extend the final maturity by five years to October 2, 2022.

· amend the definition of Indebtedness to exclude Indebtedness attributable to the Partnership or a Subsidiary under a precedent agreement to be entered into by the Partnership’s Subsidiary, Portland Natural Gas Transmission System (“PNGTS”), for firm natural gas transportation service from TransCanada PipeLines Limited (“TransCanada”) from the Union Dawn receipt point to the East Hereford delivery point into the PNGTS system (the “PXP Precedent Agreement”) to the extent that liabilities under the PXP Precedent Agreement would not be required under the loss contingency recognition principles in ASC 450 to be reflected on the consolidated balance sheet of the Partnership on the date of determination.

· update definitions, representations, warranties, covenants and other provisions to be consistent among the Partnership’s loan and credit agreements and to reflect the Partnership’s acquisition of interests in PNGTS and Iroquois Gas Transmission, LP (“Iroquois”) on June 1, 2017.

The summary in this Item 1.01 of the material terms of the Second Amendment to Loan Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Second Amendment to Loan Agreement, a copy of which is filed as Exhibit 99.1 hereto and incorporated herein by reference.

Amendment No. 1 to Term Loan Agreement

On September 29, 2017, the Partnership entered into an amendment dated September 29, 2017 (the “Amendment No. 1 to Term Loan Agreement”) to the Term Loan Agreement dated as of September 30, 2015 (the “2015 Term Loan Agreement”), by and among the Partnership, Bank of America, N.A., as administrative agent (the “Bank of America”), and the lenders party thereto (the “BOA Lenders”).  The Amendment No. 1 to Term Loan Agreement amends the 2015 Term Loan Agreement to, among other things:

· extend the final maturity to October 1, 2020.

· amend the definition of Indebtedness to exclude Indebtedness attributable to the Partnership or a Subsidiary under the PXP Precedent Agreement to the extent that liabilities under the PXP Precedent Agreement would not be required under the loss contingency recognition principles in ASC 450 to be reflected on the consolidated balance sheet of the Partnership on the date of determination.

· amend the leverage ratio covenant to require for one or more Permitted Acquisitions with a total consideration of $30,000,000 or more during any Fiscal Quarter before the Required Threshold increases.

· update definitions, representations, warranties, covenants and other provisions to be consistent among the Partnership’s loan and credit agreements and to reflect the Partnership’s acquisition of interests in PNGTS and Iroquois on June 1, 2017.

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The summary in this Item 1.01 of the material terms of the Amendment No. 1 to Term Loan Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Amendment No. 1 to Term Loan Agreement, a copy of which is filed as Exhibit 99.2 hereto and incorporated herein by reference.

First Amendment to Third Amended and Restated Revolving Credit Agreement

On September 29, 2017, the Partnership entered into an amendment, effective as of October 2, 2017 (the “First Amendment to Third Amended and Restated Revolving Credit Agreement”), to the Third Amended and Restated Revolving Credit Agreement, dated as of November 10, 2016 (the “Credit Agreement”), by and among the Partnership, the banks and other financial institutions party thereto constituting the Required Lenders (the “Required Lenders”) and SunTrust Bank, as administrative agent for the Required Lenders. The First Amendment to Third Amended and Restated Revolving Credit Agreement amends the Third Amended and Restated Revolving Credit Agreement to, among other things:

· amend the definition of Indebtedness to exclude Indebtedness attributable to the Partnership or a Subsidiary under the PXP Precedent Agreement to the extent that liabilities under the PXP Precedent Agreement would not be required under the loss contingency recognition principles in ASC 450 to be reflected on the consolidated balance sheet of the Partnership on the date of determination.

· update definitions, representations, warranties, covenants and other provisions to be consistent among the Partnership’s loan and credit agreements and to reflect the Partnership’s acquisition of interests in PNGTS and Iroquois on June 1, 2017.

The summary in this Item 1.01 of the material terms of the First Amendment to Third Amended and Restated Revolving Credit Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the First Amendment to Third Amended and Restated Revolving Credit Agreement, a copy of which is filed as Exhibit 99.3 hereto and incorporated herein by reference.

Other Related Matters

The representations, warranties and covenants contained in the Second Amendment to Loan Agreement, the Amendment No. 1 to Term Loan Agreement and the First Amendment to Third Amended and Restated Revolving Credit Agreement were made solely for purposes of such agreements and as of specific dates, were solely for the benefit of the parties to the applicable agreements, may be subject to limitations agreed upon by the contracting parties, including being qualified by confidential disclosures made for the purposes of allocating contractual risk between the parties instead of establishing these matters as facts, and may be subject to standards of materiality applicable to the contracting parties that differ from those applicable to unitholders and other investors. Unitholders and other investors are not third-party beneficiaries under these agreements and should not rely on the representations, warranties and covenants or any descriptions thereof as characterizations of the actual state of facts or condition of the Partnership or any of its subsidiaries, equity investees or affiliates. Additionally, information concerning the subject matter of the representations and warranties may change after the date of these agreements, which subsequent information may or may not be fully reflected in the Partnership’s public disclosures.

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Item 2.03   Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

The information in Item 1.01 of this Current Report on Form 8-K is hereby incorporated by reference into this Item 2.03.

Item 9.01.  Financial Statements and Exhibits.

(d)  Exhibits

Exhibit No.	Description
99.1		Second Amendment to Term Loan Agreement dated September 29, 2017
99.2		Amendment No. 1 to Term Loan Agreement dated September 29, 2017
99.3		First Amendment to Third Amended and Restated Revolving Credit Agreement dated September 29, 2017

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

TC PipeLines, LP

by:  TC PipeLines GP, Inc.,

its general partner

By:   /s/ Jon Dobson                                    

Jon Dobson

Secretary

Dated:  October 2, 2017

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EXHIBIT INDEX

Exhibit No.	Description
99.1		Second Amendment to Term Loan Agreement dated September 29, 2017
99.2		Amendment No. 1 to Term Loan Agreement dated September 29, 2017
99.3		First Amendment to Third Amended and Restated Revolving Credit Agreement dated September 29, 2017

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EX-99.1

Exhibit 99.1

SECOND AMENDMENT TO

TERM LOAN AGREEMENT

THIS SECOND AMENDMENT TO TERM LOAN AGREEMENT (this “Amendment”), is made and entered into as of September 29, 2017 but given effect as of October 2, 2017, by and among TC PIPELINES, LP., a Delaware limited partnership (the “Borrower”), the banks and other financial institutions party hereto (collectively, the “Lenders”) and SUNTRUST BANK, in its capacity as Administrative Agent for the Lenders (the “Administrative Agent”).

W I T N E S S E T H:

WHEREAS, the Borrower, the Lenders from time to time party thereto and the Administrative Agent are parties to a certain Term Loan Agreement, dated as of July 1, 2013, (as amended by that certain First Amendment to Term Loan Agreement, dated as of November 10, 2016, and as may be further amended, restated, supplemented or otherwise modified from time to time, the “Credit Agreement”; capitalized terms used herein and not otherwise defined shall have the meanings assigned to such terms in the Credit Agreement), pursuant to which such Lenders have made certain financial accommodations available to the Borrower;

WHEREAS, the Borrower has requested that each of the Lenders and the Administrative Agent amend certain provisions of the Credit Agreement to extend the Maturity Date of the Term Loans, and subject to the terms and conditions hereof, the Lenders are willing to do so;

NOW, THEREFORE, for good and valuable consideration, the sufficiency and receipt of all of which are acknowledged, the parties agree as follows:

1.Amendments.

                  (a)           Section 1.1 of the Credit Agreement is hereby amended by replacing the definitions of “Affiliate”, “Federal Funds Rate”, “Indebtedness”, ‘LIBOR”, “Material Adverse Effect”, “Maturity Date”, “Significant Subsidiary” and “Subsidiary” in their entirety with the following:

“Affiliate” shall mean, as to any Person, any other Person that, directly or indirectly, controls, is controlled by or is under common control with such Person or is a director or officer of such Person.  For purposes of this definition the term “control” (including the terms “controlling”, “controlled by” and “under common control with”) of a Person shall mean the possession, direct or indirect, of the power to direct or cause the direction of the management and policies of such Person, whether through the ownership of voting stock, by contract or otherwise, provided, that, for purposes of Section 7.6, each of Northern Border, GLGT and Iroquois shall be deemed to be an Affiliate of the Borrower as long as it qualifies as a Significant Subsidiary.

“Federal Funds Rate” shall mean, for any day, the rate per annum equal to the weighted average of the rates on overnight Federal funds transactions with member banks of the Federal Reserve System, as published by the Federal Reserve Bank of New York on the next succeeding Business Day or, if such rate is not so published for any Business Day, the Federal Funds Rate for such day shall be the average of the quotations for such day on such transactions received by the Administrative Agent from three Federal funds brokers of recognized standing selected by the Administrative Agent (provided that if such rate is less than zero, such rate shall be deemed to be zero).

“Indebtedness” of any Person shall mean, without duplication, (i) all obligations of such Person for borrowed money, (ii) all obligations of such Person evidenced by bonds, debentures, notes or other similar instruments, (iii) all obligations of such Person in respect of the deferred purchase price of property or services (other than trade payables incurred in the ordinary course of business), (iv) all obligations of such Person under any conditional sale or other title retention agreement(s) relating to property acquired by such Person, (v) all Capital Lease Obligations of such Person, (vi) all obligations, contingent or otherwise, of such Person in respect of letters of credit, acceptances or similar extensions of credit, (vii) all Guarantees of such Person of the type of Indebtedness described in clauses (i) through (vi) above, (viii) all Indebtedness of a third party secured by any Lien on property owned by such Person, whether or not such Indebtedness has been assumed by such Person, (ix) all obligations of such Person to purchase, redeem, retire or otherwise acquire for value any common stock of such Person, (x) Off-Balance Sheet Liabilities and (xi) all Hedging Obligations; provided, however, that Indebtedness attributable to the Borrower or a Subsidiary under the PXP Precedent Agreement shall include only those liabilities under the PXP Precedent Agreement that would be required under the loss contingency recognition principles in ASC 450 to be reflected on the consolidated balance sheet of the Borrower on the date of determination.  The Indebtedness of any Person shall include the Indebtedness of any partnership or joint venture in which such Person is a general partner or a joint venturer, except to the extent that the terms of such Indebtedness provide that such Person is not liable therefor.

“LIBOR” shall mean, for any applicable Interest Period with respect to any Eurodollar Term Loan, the rate per annum appearing on Reuters Screen LIBOR01 Page (or any successor page) as the London interbank offered rate for Dollar deposits as of 11:00 a.m. (London, England time) on the day that is two Business Days prior to the first day of the Interest Period; provided, that if the Administrative Agent determines that the relevant foregoing sources are unavailable for the relevant Interest Period, LIBOR shall mean the rate of interest determined by the Administrative Agent to be the average of the rates per annum at which deposits in Dollars are offered to the Administrative Agent two (2) Business Days preceding the first day of such Interest Period by leading banks in the London interbank market as of 10:00 a.m. (New York time) for delivery on the first day of such Interest Period, for the number of days comprised therein and in an amount comparable to the amount of the Eurodollar Term Loan of the Administrative Agent (provided that if such rate is less than zero, such rate shall be deemed to be zero).

“Material Adverse Effect” shall mean, with respect to any event, act, condition or occurrence of whatever nature (including any adverse determination in any litigation, arbitration, or governmental investigation or proceeding), whether singularly or in conjunction with any other event or events, act or acts, condition or conditions, occurrence or occurrences whether or not related, a material adverse change in, or a material adverse effect on, (i) the business, results of operations, financial condition, assets, or liabilities of the Borrower, its Subsidiaries, Northern Border, GLGT and Iroquois, taken as a whole, (ii) the ability of the Borrower  to perform any of its obligations under the Loan Documents, (iii) the rights and remedies of the Administrative Agent and the Lenders under any of the Loan Documents or (iv) the legality, validity or enforceability of any of the Loan Documents.

“Maturity Date” shall mean, with respect to the Term Loans, the earlier of (i) October 2, 2022 or (ii) the date on which the principal amount of all outstanding Term Loans have been declared or automatically have become due and payable (whether by acceleration or otherwise).

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“Significant Subsidiary” shall have the meaning specified in Article 1, Rule 1-02(w) of Regulation S-X of the Securities Exchange Act of 1934 as of the Effective Date, provided, that, even if Northern Border, GLGT and Iroquois would not otherwise constitute a Subsidiary of the Borrower, each of Northern Border, GLGT and Iroquois shall be deemed to be a Significant Subsidiary of the Borrower if it would otherwise qualify as a Significant Subsidiary under Article 1, Rule 1-02(w) of Regulation S-X as of the First Amendment Date.

“Subsidiary” shall mean, with respect to any Person (the “parent”), any corporation, partnership, joint venture, limited liability company, association or other entity the accounts of which would be consolidated with those of the parent in the parent’s consolidated financial statements if such financial statements were prepared in accordance with GAAP as of such date, as well as any other corporation, partnership, joint venture, limited liability company, association or other entity (i) of which securities or other ownership interests representing more than 50% of the equity or more than 50% of the ordinary voting power, or in the case of a partnership, more than 50% of the general partnership interests are, as of such date, owned, controlled or held, or (ii) that is, as of such date, otherwise controlled, by the parent or one or more subsidiaries of the parent or by the parent and one or more subsidiaries of the parent.  Unless otherwise indicated, all references to “Subsidiary” hereunder shall mean a Subsidiary of the Borrower.  For the avoidance of doubt, (a) Northern Border and GLGT are not Subsidiaries of the Borrower as of the Closing Date, (b) as of June 1, 2017, Iroquois is not a Subsidiary of the borrower and (c) as of June 1, 2017, PNGTS is a Subsidiary of the Borrower; provided, that each of Northern Border, GLGT and Iroquois shall be automatically deemed Subsidiaries of the Borrower if clause (i) of this definition becomes applicable to it.

(b)               Section 1.1 of the Credit Agreement is further amended by adding the following new definitions in proper alphabetical order:

“ASC” shall mean Accounting Standards Codification of the Financial Accounting Standards Board.

“Iroquois” shall mean Iroquois Gas Transmission System, L.P., a Delaware limited partnership.

“Iroquois Partnership Agreement” shall mean that certain Third Amended and Restated Limited Partnership Agreement of Iroquois Gas Transmission System, L.P., dated as of May 1, 2016, as amended by that certain Counterpart and First Amendment effective as of 12:01 Eastern time on June 1, 2007, and as may be further amended, supplemented, restated or otherwise modified from time to time.

“PXP Precedent Agreement” shall mean the precedent agreement to be entered into by PNGTS for firm natural gas transportation service from TransCanada PipeLines Limited relating to the delivery of natural gas from the Union Dawn receipt point to the East Hereford delivery point into the PNGTS system, as the same may be amended, restated, supplemented or otherwise modified from time to time.

“Second Amendment Effective Date” shall mean October 2, 2017.

(c)               Section 1.1 of the Credit Agreement is further amended by replacing the proviso at the end of clause (v) of the definition of Defaulting Lender in its entirety with the following:

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provided that a Lender shall not be a Defaulting Lender pursuant to this clause (v) solely by virtue of the ownership or acquisition of any equity interest in that Lender or any direct or indirect parent company thereof by a Governmental Authority so long as such ownership interest does not result in or provide such Lender with immunity from the jurisdiction of courts within the United States or from the enforcement of judgments or writs of attachment on its assets or permit such Lender (or such Governmental Authority) to reject, repudiate, disavow or disaffirm any contracts or agreements made with such Lender.

(d)             Section 4.4 of the Credit Agreement, is hereby amended by replacing subsection (b) in its entirety with the following:

(b)            Since December 31, 2016, there have been no changes with respect to the Borrower, its Subsidiaries, Northern Border and GLGT which have had or could reasonably be expected to have, singly or in the aggregate, a Material Adverse Effect.  Since June 1, 2017, to the Borrower’s knowledge, there have been no changes with respect to Iroquois which have had or could reasonably be expected to have, singly or in the aggregate, a Material Adverse Effect.

(e)            Section 4.14 of the Credit Agreement is hereby amended by replacing in its entirety such section with the following:

Section 4.14.              Subsidiaries.  Schedule 4.14 attaches a true and complete organizational chart of the Borrower and all of its Subsidiaries (including the ownership of Northern Border, GLGT and Iroquois), in each case as of the Second Amendment Effective Date, which Schedule the Borrower shall update upon notice to the Administrative Agent promptly following the completion of any material Permitted Acquisition and promptly following the incorporation, organization or formation of any material Subsidiary.

(f)            Section 7.3 of the Credit Agreement is hereby amended by inserting a new clause (e) after clause (d) thereof as follows:

(e)           So long as Iroquois is a Significant Subsidiary of the Borrower, the Borrower shall not provide its consent to, or vote to, permit Iroquois to lease, sell or otherwise dispose of its assets to any other Person except: (i) sales of inventory, investments, and other assets in the ordinary course of business, (ii) leases, sales or other dispositions of its assets that, together with all other assets of Iroquois previously leased, sold or disposed of (other than disposed of pursuant to this Section 7.3(e)) during the twelve-month period ending with the month in which any such lease, sale or other disposition occurs, do not constitute a substantial portion of the assets of Iroquois, (iii) sales of assets which are concurrently leased back, (iv) dispositions of assets which are obsolete or no longer used or useful in the business of Iroquois, and (v) as permitted pursuant to the Iroquois Partnership Agreement as in effect on the Second Amendment Effective Date.

(g)          Section 7.10 of the Credit Agreement is hereby amended by replacing in its entirety such section with the following:

Section 7.10           Certain Amendments to Cash Distribution Policies and Partnership Agreements.   The Borrower agrees that it shall not consent to, or vote in favor of, or, in the case of any of the following that is applicable to a Subsidiary, permit, any amendment of (a) the cash distribution policies of the Borrower, TC PipeLines ILP, TC GL ILP, Tuscarora ILP, Northern Border, GLGT, Tuscarora or Iroquois in any manner which would materially adversely affect the rights and remedies of the Lenders under and in connection with this Agreement, the Notes or any other Loan Document; or (b) the Borrower Partnership Agreement, the TC PipeLines ILP Partnership Agreement, the Tuscarora ILP Partnership Agreement, the Northern Border Partnership Agreement, the TC GL Partnership Agreement, the GLGT Partnership Agreement, the Tuscarora Partnership Agreement or the Iroquois Partnership Agreement in any manner which would (i) have a material adverse effect on the rights and remedies of the Lenders under and in connection with this Agreement, the Notes or any other Loan Document; or (ii) result in a Material Adverse Effect.

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(h)           Section 7.13 of the Credit Agreement is hereby amended by replacing in its entirety such section with the following:

Section 7.13          Sanctions. The Borrower will not, and will not permit any Subsidiary to, use the proceeds of any Loans hereunder (i) for the purpose of funding, financing or facilitating any activities, business or transactions of or with any Sanctioned Person or any Canadian Sanctioned Person, or in any Sanctioned Country or in any Canadian Sanctioned Country, or (ii) in any manner that would result in the violation of any Sanctions or Canadian Sanctions applicable to any party hereto.

(i)            Schedule 4.14 of the Credit Agreement is hereby amended by replacing such schedule in its entirety with Schedule 4.14 hereto.

2.Conditions to Effectiveness of this Amendment.  Notwithstanding any other provision of this Amendment and without affecting in any manner the rights of the Lenders hereunder, it is understood and agreed that this Amendment shall not become effective, and the Borrower shall have no rights under this Amendment, until the Administrative Agent shall have received:

(a)           a counterpart of this Amendment signed by or on behalf of each party hereto or written evidence satisfactory to the Administrative Agent (which may include telecopy or other electronic transmission of a signed signature page of this Amendment) that such party has signed a counterpart of this Amendment;

(b)           a copy of that certain First Amendment to Third Amended and Restated Revolving Credit Agreement, dated as of the date hereof, duly executed and delivered by the parties thereto;

(c)           a certificate of the Secretary or Assistant Secretary of the General Partner in the form of Exhibit 3.1(b)(iv) to the Credit Agreement, attaching and certifying copies of (i) the articles or certificate of incorporation, certificate of organization or limited partnership, or other registered organizational documents of the Borrower and the General Partner, (ii) the bylaws, the partnership agreement, or comparable organizational documents and authorizations of the Borrower and the General Partner and (iii) resolutions of the board of directors or comparable governing body of the General Partner and the General Partner on behalf of the Borrower, authorizing the execution, delivery and performance of the Loan Documents by the Borrower;

(d)           certificates of good standing or existence, as may be available from the Secretary of State of the jurisdiction of organization of the Borrower and the General Partner, and copies of online verification statements of good standing or existence for each other jurisdiction where the Borrower is required to be qualified to do business as a foreign corporation;

(e)           a certificate signed by a Responsible Officer, certifying the name, title and true signature of each officer of the General Partner executing the Loan Documents on behalf of the Borrower to which the Borrower is a party;

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(f)           favorable written opinion(s) of in-house counsel to the Borrower, addressed to the Administrative Agent and each of the Lenders, and covering such matters relating to the Borrower and the General Partner, this Amendment and the Credit Agreement (as amended by this Amendment) and the transactions contemplated therein as the Administrative Agent shall reasonably request;

(g)          a certificate in the form reasonably satisfactory to the Administrative Agent, dated the date hereof and signed by a Responsible Officer, certifying that, (i) no Default or Event of Default exists, (ii) no default or event of default exists in respect of any Material Indebtedness, (iii) after giving effect to this Amendment, the representations and warranties contained in the Credit Agreement and the other Loan Documents are true and correct in all material respects (other than representations and warranties expressly stated to be made as of an earlier date), (iv) since November 10, 2016, there has been no change which has had or could reasonably be expected to have a Material Adverse Effect; and

(h)          payment of fees as set forth in that certain Fee Letter, dated August 28, 2017 among SunTrust Robinson Humphrey, Inc., SunTrust Bank and the Borrower and reimbursement or payment of the Administrative Agent’s costs and expenses incurred in connection with this Amendment or the Credit Agreement (including reasonable fees, charges and disbursements of King & Spalding LLP, counsel to the Administrative Agent).

3.Representations and Warranties.  To induce the Lenders and the Administrative Agent to enter into this Amendment, the Borrower hereby represents and warrants to the Lenders and the Administrative Agent:

(a)          The Borrower and each of its Subsidiaries (i) is duly orga-nized, validly existing and in good standing as a corporation, partnership or limited liability company under the laws of the jurisdiction of its organization, (ii) -has all requisite power and authority to carry on its business as now conducted, and (iii) is duly qualified to do business, and is in good standing, in each jurisdiction where such qualification is required, except where a failure to be so qualified could not reasonably be expected to result in a Material Adverse Effect;

(b)         The execution, delivery and performance by the Borrower of this Amendment are within the Borrower’s organizational powers and have been duly authorized by all necessary organizational, and if required, general partner action.  This Amendment has been duly executed and delivered by the Borrower, andconstitutes a valid and binding obligation of the Borrower, enforceable against it in accordance with its terms, except as may be limited by applicable bankruptcy, insolvency, reorganization, moratorium, or similar laws affecting the enforcement of creditors’ rights generally and by general principles of equity;

(c)          The execution, delivery and performance by the Borrower of this Amendment (i) do not require any consent or approval of, registration or filing with, or any action by, any Governmental Authority, except those as have been obtained or made and are in full force and effect, (ii) will not violate any Requirements of Law applicable to Borrower or any of its Subsidiaries or any judgment, order or ruling of any Governmental Authority, (iii) will not violate or result in a default under any indenture, material agreement or other material instrument binding on the Borrower or any of its Subsidiaries or any of its assets or give rise to a right thereunder to require any payment to be made by the Borrower or any of its Subsidiaries and (iv) will not result in the creation or imposition of any Lien on any asset of the Borrower or any of its Subsidiaries, except Liens (if any) created under the Loan Documents; and

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(d)         After giving effect to this Amendment, the representations and warranties contained in the Credit Agreement and the other Loan Documents are true and correct in all material respects (other than representations and warranties expressly stated to be made as of an earlier date), and no Default or Event of Default has occurred and is continuing as of the date hereof.

4.Effect of Amendment.  Except as set forth expressly herein, all terms of the Loan Documents shall be and remain in full force and effect and shall constitute the legal, valid, binding and enforceable obligations of the Borrower to the Lenders and the Administrative Agent.  This Amendment shall constitute a Loan Document for all purposes of the Credit Agreement.

5.Governing Law.   This Amendment shall be governed by, and construed in accordance with, the internal laws of the State of New York and all applicable federal laws of the United States of America.

6.No Novation.  This Amendment is not intended by the parties to be, and shall not be construed to be, a novation of the Credit Agreement or an accord and satisfaction in regard thereto.

7.Costs and Expenses.  The Borrower agrees to pay on demand all reasonable out-of-pocket costs and expenses of the Administrative Agent in connection with the preparation, execution and delivery of this Amendment, including, without limitation, the reasonable fees and out-of-pocket expenses of outside counsel for the Administrative Agent with respect thereto.

8.Counterparts.  This Amendment may be executed by one or more of the parties hereto in any number of separate counterparts, each of which shall be deemed an original and all of which, taken together, shall be deemed to constitute one and the same instrument.  Delivery of an executed counterpart of this Amendment by facsimile transmission or by electronic mail in pdf form shall be as effective as delivery of a manually executed counterpart hereof.

9.Binding Nature.  This Amendment shall be binding upon and inure to the benefit of the parties hereto, their respective successors, successors-in-titles, and assigns.

10.               Entire Understanding.  This Amendment sets forth the entire understanding of the parties with respect to the matters set forth herein, and shall supersede any prior negotiations or agreements, whether written or oral, with respect thereto.

11.Severability.  Any provision of this Amendment held to be illegal, invalid or unenforceable in any jurisdiction, shall, as to such jurisdiction, be ineffective to the extent of such illegality, invalidity or unenforceability without affecting the legality, validity or enforceability of the remaining provisions hereof or thereof; and the illegality, invalidity or unenforceability of a particular provision in a particular jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction.

[Signature Pages To Follow]

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IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed by their respective authorized officers as of the day and year first above written.

BORROWER:

TC PIPELINES, LP

By: TC PipeLines GP, Inc., its General Partner

By:  /s/Nathaniel A. Brown                                          

Name:   Nathaniel A. Brown

Title:     Controller and Principal Financial Officer

By: /s/Jon A. Dobson                                               

Name:    Jon A. Dobson

Title:      Secretary

[SIGNATURE PAGE TO SECOND AMENDMENT TO TERM LOAN AGREEMENT]

ADMINISTRATIVE AGENT:

SUNTRUST BANK, as Administrative Agent and a Lender

By: /s/Carmen Malizia                                   

Name: Carmen Malizia

Title:  Director

[SIGNATURE PAGE TO SECOND AMENDMENT TO TERM LOAN AGREEMENT]

 Bank of America, N.A., as a Lender

By: /s/Adrian Plummer                              

Name: Adrian Plummer

Title: Associate

[SIGNATURE PAGE TO SECOND AMENDMENT TO TERM LOAN AGREEMENT]

 MIZUHO BANK, LTD, as a Lender

By: /s/Brad C. Crilly                              

Name: Brad C. Crilly

Title: Managing Director

[SIGNATURE PAGE TO SECOND AMENDMENT TO TERM LOAN AGREEMENT]

 Export Development Canada, as a Lender

By: /s/Sheila Banning                              

Name: Sheila Banning

Title: Financing Manager

By: /s/Christiane de Billy                                

Name:  Christiane de Billy 

Title: Senior Financing Manager 

[SIGNATURE PAGE TO SECOND AMENDMENT TO TERM LOAN AGREEMENT]

 JP Morgan Chase Bank, N.A., as a Lender

By: /s/Juan J. Javellana                             

Name: Juan J. Javellana

Title: Executive Director

[SIGNATURE PAGE TO SECOND AMENDMENT TO TERM LOAN AGREEMENT]

 CITIBANK, N.A., as a Lender

By: /s/Eamon Baqui                             

Name: Eamon Baqui

Title: Vice President

[SIGNATURE PAGE TO SECOND AMENDMENT TO TERM LOAN AGREEMENT]

DEUTSCHE BANK AG NEW YORK BRANCH, as a Lender

By: /s/Virginia Cosenza                              

Name: Virginia Cosenza

Title: Vice President

By: /s/Ming K. Chu                                      

Name:  Ming K. Chu 

Title: Director 

[SIGNATURE PAGE TO SECOND AMENDMENT TO TERM LOAN AGREEMENT]

 The Bank of Tokyo-Mitsubishi UFJ, Ltd., as a Lender

By: /s/Kevin Sparks                                    

Name: Kevin Sparks

Title: Director

[SIGNATURE PAGE TO SECOND AMENDMENT TO TERM LOAN AGREEMENT]

HSBC Bank Canada, as a Lender

By: /s/Adam Lamb                                   

Name: Adam Lamb

Title: Vice President, Global Banking

 By: /s/Jason Lang                                    

 Name: Jason Lang

Title: Director, Global Banking  039729

[SIGNATURE PAGE TO SECOND AMENDMENT TO TERM LOAN AGREEMENT]

 WELLS FARGO BANK, N.A., as a Lender

By: /s/Nathan Starr                                

Name: Nathan Starr

Title: Vice President

[SIGNATURE PAGE TO SECOND AMENDMENT TO TERM LOAN AGREEMENT]

Schedule 4.14

Subsidiaries

[see attached]

EX-99.2

Exhibit 99.2

AMENDMENT NO. 1 TO TERM LOAN AGREEMENT

This AMENDMENT NO. 1 TO TERM LOAN AGREEMENT, is made this September 29, 2017 (this “Amendment”), by and among TC PIPELINES, LP, as borrower (the “Borrower”), BANK OF AMERICA, N.A., as administrative agent (the “Administrative Agent”), and the lenders party thereto (the “Lenders”). Each initially capitalized term used but not otherwise defined herein shall have the meaning ascribed thereto in the Term Loan Agreement described below (as amended hereby).

W I T N E S S E T H:

WHEREAS, the Borrower, the Administrative Agent, and the Lenders have entered into the that certain Term Loan Agreement, dated as of September 30, 2015 (as amended, restated, modified or supplemented from time to time, the “Term Loan Agreement”); and

WHEREAS, the parties hereto wish to amend the Term Loan Agreement as hereinafter set forth.

NOW, THEREFORE, the parties hereto hereby agree as follows:

Section 1. Amendments to Term Loan Agreement.

1.1This Amendment shall be deemed to be an amendment to the Term Loan Agreement and shall not be construed in any way as a replacement or substitution therefor.  All of the terms and conditions of, and terms defined in, this Amendment are hereby incorporated by reference into the Term Loan Agreement as if such terms and provisions were set forth in full therein.

1.2A new definition of “ASC” is hereby added to Section 1.1 of the Term Loan Agreement in appropriate alphabetical order to read in its entirety as follows:

     “ASC” shall mean Accounting Standards Codification of the Financial Accounting Standards Board.

1.3The definition of “Affiliate” in Section 1.1 of the Term Loan Agreement is hereby amended and restated in its entirety to read as follows:

      “Affiliate” shall mean, as to any Person, any other Person that, directly or indirectly, controls, is controlled by or is under common control with such Person or is a director or officer of such Person.  For purposes of thisdefinition the term “control” (including the terms “controlling”, “controlled by” and “under common control with”) of a Person shall mean the possession, direct or indirect, of the power to direct or cause the direction of the management and policies of such Person, whether through the ownership of voting stock, by contract or otherwise, provided, that, for purposes of Section 7.6, each of Northern Border, GLGT and Iroquois shall be deemed to be an Affiliate of the Borrower as long as it qualifies as a Significant Subsidiary.

1.4The definition of “Federal Funds Rate” in Section 1.1 of the Term Loan Agreement is hereby amended and restated in its entirety to read as follows:

      “Federal Funds Rate” shall mean, for any day, the rate per annum equal to the weighted average of the rates on overnight Federal funds transactions with member banks of the Federal Reserve System, as published by the Federal Reserve Bank of New York on the next succeeding Business Day or, if such rate is not so published for any Business Day, the Federal Funds Rate for such day shall be the average of the quotations for such day on such transactions received by the Administrative Agent from three Federal funds brokers of recognized standing selected by the Administrative Agent; provided that if such rate is less than zero, such rate is deemed to be zero.

1.5A new definition of “First Amendment Effective Date” is hereby added to Section 1.1 of the Term Loan Agreement in appropriate alphabetical order to read in its entirety as follows:

      “First Amendment Effective Date” shall mean September 29, 2017.

1.6The definition of “Indebtedness” in Section 1.1 of the Term Loan Agreement is hereby amended and restated in its entirety to read as follows:

      “Indebtedness” of any Person shall mean, without duplication, (i) all obligations of such Person for borrowed money, (ii) all obligations of such Person evidenced by bonds, debentures, notes or other similar instruments, (iii) all obligations of such Person in respect of the deferred purchase price of property or services (other than trade payables incurred in the ordinary course of business), (iv) all obligations of such Person under any conditional sale or other title retention agreement(s) relating to property acquired by such Person, (v) all Capital Lease Obligations of such Person, (vi) all obligations, contingent or otherwise, of such Person in respect of letters of credit, acceptances or similar extensions of credit, (vii) all Guarantees of such Person of the type of Indebtedness described in clauses (i) through (vi) above, (viii) all Indebtedness of a third party secured by any Lien on property owned by such Person, whether or not such Indebtedness has been assumed by such Person, (ix) all obligations of such Person to purchase, redeem, retire or otherwise acquire for value any common stock of such Person, (x) Off-Balance Sheet Liabilities and (xi) all Hedging Obligations; provided, however, that Indebtedness attributable to the Borrower or a Subsidiary under the PXP Precedent Agreement shall include only those liabilities under the PXP Precedent Agreement that would be required under the loss contingency recognition principles in ASC 450 to be reflected on the consolidated balance sheet of the Borrower on the date of determination.  The Indebtedness of any Person shall include the Indebtedness of any partnership or joint venture in which such Person is a general partner or a joint venturer, except to the extent that the terms of such Indebtedness provide that such Person is not liable therefor.

1.7A new definition of “Iroquois” is hereby added to Section 1.1 of the Term Loan Agreement in appropriate alphabetical order to read in its entirety as follows:

      “Iroquois” shall mean Iroquois Gas Transmission System, L.P., a Delaware limited partnership.

1.8A new definition of “Iroquois Partnership Agreement” is hereby added to Section 1.1 of the Term Loan Agreement in appropriate alphabetical order to read in its entirety as follows:

      “Iroquois Partnership Agreement” shall mean that certain Counterpart and Third Amendment to the Third Amended and Restated Limited Partnership Agreement of Iroquois dated effective as of 12:01 Eastern time on June 1, 2007, as amended, supplemented, restated or otherwise modified from time to time.

1.9The definition of “LIBOR” in Section 1.1 of the Term Loan Agreement is hereby amended and restated in its entirety to read as follows:

      “LIBOR” shall mean, for any applicable Interest Period with respect to any Eurodollar Term Loan, the rate per annum equal to the London interbank offered rate for deposits in U.S. Dollars referred to as “LIBOR” as published on Bloomberg page LR (or on any successor or substitute page of such service or any successor to such service, or such other commercially available source providing such quotations as may be designated by the Administrative Agent from time to time) at approximately 11:00 A.M. (London time) two (2) Business Days prior to the first day of such Interest Period, with a maturity comparable to such Interest Period; provided, that if such rate is not available at any such time for any reason, then such rate shall instead be the interest rate per annum, as determined by the Administrative Agent, to be the arithmetic average of the rates per annum at which deposits in  U. S. Dollars in an amount equal to the amount of such Eurodollar Term Loan are offered by major banks in the London interbank market to the Administrative Agent at approximately 11:00 A.M. (London time), two (2) Business Days prior to the first day of such Interest Period; provided that if such rate is less than zero, such rate is deemed to be zero.

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1.10The definition of “Material Adverse Effect” in Section 1.1 of the Term Loan Agreement is hereby amended and restated in its entirety to read as follows:

        “Material Adverse Effect” shall mean, with respect to any event, act, condition or occurrence of whatever nature (including any adverse determination in any litigation, arbitration, or governmental investigation or proceeding), whether singularly or in conjunction with any other event or events, act or acts, condition or conditions, occurrence or occurrences whether or not related, a material adverse change in, or a material adverse effect on, (i) the business, results of operations, financial condition, assets, or liabilities of the Borrower, its Subsidiaries, Northern Border, GLGT and Iroquois, taken as a whole, (ii) the ability of the Borrower  to perform any of its obligations under the Loan Documents, (iii) the rights and remedies of the Administrative Agent and the Lenders under any of the Loan Documents or (iv) the legality, validity or enforceability of any of the Loan Documents.

1.11The definition of “Maturity Date” in Section 1.1 of the Term Loan Agreement is hereby amended and restated in its entirety to read as follows:

“Maturity Date” shall mean the earlier of (i) October 1, 2020, and (ii) the date on which the principal amount of all outstanding Term Loans have been declared or automatically have become due and payable (whether by acceleration or otherwise).

1.12A new definition of “PNGTS” is hereby added to Section 1.1 of the Term Loan Agreement in appropriate alphabetical order to read in its entirety as follows:

        “PNGTS” shall mean Portland Natural Gas Transmission System, a Maine general partnership.

1.13A new definition of “PXP Precedent Agreement” is hereby added to Section 1.1 of the Term Loan Agreement in appropriate alphabetical order to read in its entirety as follows:

        “PXP Precedent Agreement” shall mean the precedent agreement to be entered into by PNGTS for firm natural gas transportation service from TransCanada PipeLines Limited relating to the delivery of natural gas from the Union Dawn receipt point to the East Hereford delivery point into the PNGTS system, as the same may be amended, restated, supplemented or otherwise modified from time to time.

1.14The definition of “Significant Subsidiary” in Section 1.1 of the Term Loan Agreement is hereby amended and restated in its entirety to read as follows:

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        “Significant Subsidiary” shall have the meaning specified in Article 1, Rule 1-02(w) of Regulation S-X of the Securities Exchange Act of 1934 as of the Effective Date, provided, that, even if Northern Border, GLGT and Iroquois would not otherwise constitute a Subsidiary of the Borrower, each of Northern Border, GLGT and Iroquois shall be deemed to be a Significant Subsidiary of the Borrower if it would otherwise qualify as a Significant Subsidiary under Article 1, Rule 1-02(w) of Regulation S-X as of the First Amendment Effective Date.

1.15The definition of “Subsidiary” in Section 1.1 of the Term Loan Agreement is hereby amended and restated in its entirety to read as follows:

        “Subsidiary” shall mean, with respect to any Person (the “parent”), any corporation, partnership, joint venture, limited liability company, association or other entity the accounts of which would be consolidated with those of the parent in the parent’s consolidated financial statements if such financial statements were prepared in accordance with GAAP as of such date, as well as any other corporation, partnership, joint venture, limited liability company, association or other entity (i) of which securities or other ownership interests representing more than 50% of the equity or more than 50% of the ordinary voting power, or in the case of a partnership, more than 50% of the general partnership interests are, as of such date, owned, controlled or held, or (ii) that is, as of such date, otherwise controlled, by the parent or one or more subsidiaries of the parent or by the parent and one or more subsidiaries of the parent.  Unless otherwise indicated, all references to “Subsidiary” hereunder shall mean a Subsidiary of the Borrower.  For the avoidance of doubt, (a) Northern Border, GLGT, and Iroquois are not Subsidiaries of the Borrower as of the First Amendment Effective Date, and (b) as of the First Amendment Effective Date, PNGTS is a Subsidiary of the Borrower; provided, that each of Northern Border, GLGT and Iroquois shall be automatically deemed Subsidiaries of the Borrower if clause (i) of this definition becomes applicable to it.

1.16Section 4.4(b) of the Term Loan Agreement is hereby amended and restated in its entirety to read as follows:

        “(b)Since December 31, 2016, there have been no changes with respect to the Borrower, its Subsidiaries, Northern Border and GLGT which have had or could reasonably be expected to have, singly or in the aggregate, a Material Adverse Effect. Since June 1, 2017, to the Borrower’s knowledge, there have been no changes with respect to Iroquois which have had or could reasonably be expected to have, singly or in the aggregate, a Material Adverse Effect.”

1.17 Section 14.4(b) of the Term Loan Agreement is hereby amended and restated in its entirety to read as follows:

        “Section 4.14.               Subsidiaries.  Schedule 4.14 attaches a true and complete organizational chart of the Borrower and all of its Subsidiaries (including the ownership of Northern Border, GLGT and Iroquois), in each case as of the First Amendment Effective Date, which Schedule the Borrower shall update upon notice to the Administrative Agent promptly following the completion of any material Permitted Acquisition and promptly following the incorporation, organization or formation of any material Subsidiary.”

1.18  Section 6.1 of the Term Loan Agreement is hereby amended and restated in its entirety to read as follows:

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         “Section 6.1.Leverage Ratio.  The Borrower and its Subsidiaries will maintain on a consolidated basis as of the end of each Fiscal Quarter, commencing with the Fiscal Quarter ending September 30, 2017, a Leverage Ratio of not greater than 5.00:1.00 (the “Required Threshold”); provided, however, that if the Borrower consummates one or more Permitted Acquisitions with a total consideration of $30,000,000 or more during any Fiscal Quarter, then the Required Threshold shall be increased to 5.50 to 1.00 for (i) the Fiscal Quarter in which such acquisition occurs (the “Acquisition Quarter”) and (ii) the two (2) Fiscal Quarters following the Acquisition Quarter, and shall be decreased to 5.00 to 1.00 as of the last day of each Fiscal Quarter thereafter (unless subsequently increased pursuant to this proviso in connection with another Permitted Acquisition); provided, however that in determining compliance with the Leverage Ratio, Permitted Subordinated Debt in an amount not to exceed $300,000,000 shall not be included in such calculation. The Borrower’s compliance with this requirement shall be calculated on a rolling four quarter basis, measured on the last day of each Fiscal Quarter. For purposes of the foregoing, to the extent Consolidated Total Funded Debt includes outstanding amounts under Hybrid Securities, then a portion of the amount of such Hybrid Securities not to exceed a total of 15% of Total Capitalization may be excluded from Consolidated Total Funded Debt (the “Excluded Hybrid Securities”).”

1.19A new Section 7.3(e) is hereby added to the Term Loan Agreement to read in its entirety as follows:

“(e)So long as Iroquois is a Significant Subsidiary of the Borrower, the Borrower shall not provide its consent to, or vote to, permit Iroquois to lease, sell or otherwise dispose of its assets to any other Person except: (i) sales of inventory, investments, and other assets in the ordinary course of business, (ii) leases, sales or other dispositions of its assets that, together with all other assets of Iroquois previously leased, sold or disposed of (other than disposed of pursuant to this Section 7.3(e)) during the twelve-month period ending with the month in which any such lease, sale or other disposition occurs, do not constitute a substantial portion of the assets of Iroquois, (iii) sales of assets which are concurrently leased back, (iv) dispositions of assets which are obsolete or no longer used or useful in the business of Iroquois, and (v) as permitted pursuant to the Iroquois Partnership Agreement as in effect on the First Amendment Effective Date.”

1.20Section 7.10 of the Term Loan Agreement is hereby amended and restated in its entirety to read as follows:

        “Section 7.10.Certain Amendments to Cash Distribution Policies and Partnership Agreements.  The Borrower agrees that it shall not consent to, or vote in favor of, or, in the case of any of the following that is applicable to a Subsidiary, permit, any amendment of (a) the cash distribution policies of the Borrower, TC PipeLines ILP, TC GL ILP, Tuscarora ILP, Northern Border, GLGT, Tuscarora or Iroquois in any manner which would materially adversely affect the rights and remedies of the Lenders under and in connection with this Agreement, the Notes or any other Loan Document; or (b) the Borrower Partnership Agreement, the TC PipeLines ILP Partnership Agreement, the Tuscarora ILP Partnership Agreement, the Northern Border Partnership Agreement, the TC GL Partnership Agreement, the GLGT Partnership Agreement, the Tuscarora Partnership Agreement or the Iroquois Partnership Agreement in any manner which would (i) have a material adverse effect on the rights and remedies of the Lenders under and in connection with this Agreement, the Notes or any other Loan Document; or (ii) result in a Material Adverse Effect.”

1.21Schedule I to the Term Loan Agreement is hereby deleted in its entirety and replaced with Schedule I attached hereto.

1.22Schedule 4.14 to the Term Loan Agreement is hereby deleted in its entirety and replaced with Schedule 4.14 attached hereto.

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1.23The Term Loan Agreement, the Loan Documents, and all agreements, instruments and documents executed and delivered in connection with any of the foregoing, shall each be deemed to be amended hereby to the extent necessary, if any, to give effect to the provisions of this Amendment.  Except as so amended hereby, the Term Loan Agreement and the Loan Documents shall remain in full force and effect in accordance with their respective terms.

Section    2. Representations and Warranties of the Borrower.

The Borrower hereby represents and warrants to the Administrative Agent and the Lenders that:

2.1After giving effect to the amendments of the Term Loan Agreement pursuant to this Amendment, and on the Effective Date (as defined below): (a) all representations and warranties of the Borrower set forth in the Loan Documents are true and correct in all material respects (other than those representations and warranties that are expressly qualified by a Material Adverse Effect or other materiality, in which case such representations and warranties shall be true and correct in all respects) on and as of such date as if made on and as of such date, except to the extent that such representations and warranties specifically refer to an earlier date, in which case such representations and warranties are true and correct in all material respects as of such earlier date, and (b) there exists no Default or Event of Default under the Term Loan Agreement before or after giving effect to this Amendment.

2.2The Borrower has full corporate and limited liability company power and authority to execute and deliver this Amendment and to perform the obligations on its part to be performed thereunder and under the Term Loan Agreement as amended hereby.

Section   3. Conditions Precedent to Amendments.

The effectiveness of the amendment contained in Section 1 of this Amendment is subject to the satisfaction, in form and substance satisfactory to the Administrative Agent, of each of the following conditions precedent (the date that each of the conditions in this Section 3 is satisfied or waived, the “Effective Date”):

3.1Each of the parties hereto shall have executed and delivered this Amendment;

3.2The Administrative Agent shall have received:

(a)     a certificate of Secretary or Assistant Secretary of the General Partner in substantially the form of Exhibit 3.1(b)(iv) to the Term Loan Agreement, attaching and certifying copies of (i) the bylaws, the partnership agreement, or comparable organizational documents and authorizations of the Borrower and the General Partner and (ii) resolutions of the board of directors or comparable governing body of the General Partner and the General Partner on behalf of the Borrower, authorizing the execution, delivery and performance of this Amendment,

(b)     certified copies of the articles or certificate of incorporation, certificate of organization or limited partnership, or other registered organizational documents of the Borrower and the General Partner, together with certificates of good standing or existence, as may be available from the Secretary of State of the jurisdiction of organization of the Borrower and the General Partner, and copies of online verification statements of good standing or existence for each other jurisdiction where the Borrower is required to be qualified to do business as a foreign corporation

6

(c) a certified signed by a Responsible Officer, certifying the name, title and true signature of each officer of the General Partner executing this Amendment on behalf of the Borrower,

(d)             a certificate substantially in the form of Exhibhit 3.1(b)(viii) to the Term Loan Agreement, dated the Effective Date and signed by a Responsible Officer, certifying that (i) all consents, approvals, authorizations, registrations and filings and orders required or advisable to be made or obtained under any Requirement of Law or by any Contractual Obligation of the Borrower, in connection with the execution, delivery, performance, validity and enforceability of this Amendment or any of the transactions contemplated thereby have been obtained, and such consents, approvals, authorizations, registrations, filings and orders shall be in full force and effect and all applicable waiting periods shall have expired, and no investigation or inquiry by any governmental authority regarding the Commitments or any transaction being financed with the proceeds thereof shall be ongoing, (ii) no Default or Event of Default exists, (iii) no default or event of default exists in respect of any Material Indebtedness, (iv) all representations and warranties of the Borrower set forth in the Loan Documents are true and correct in all material respects (other than those representations and warranties that are expressly qualified by a Material Adverse Effect or other materiality, in which case such representations and warranties shall be true and correct in all respects), and (v) since December 31, 2016, there shall have been no change which has had or could reasonably be expected to have a Material Adverse Effect, and

(e)   a certificate, dated the Effective Date and signed by the principal financial officer and controller of the General Partner, confirming that the Borrower is Solvent before and after giving effect to the transactions contemplated to occur on the Effective Date;

3.3The Borrower shall have paid to the Administrative Agent any extension fees in the amounts and at the times previously agreed upon in writing by the Borrower and the Administrative Agent; and

3.4No Default or Event of Default shall exist and be continuing as of the date hereof or as of the Effective Date.

Section 4. Reference to and Effect Upon the Term Loan Agreement and other Loan Documents.

4.1Except as specifically amended in Section 1 above, the Term Loan Agreement and each of the other Loan Documents, shall remain in full force and effect and each is hereby ratified and confirmed.

4.2This Amendment constitutes one of the Loan Documents as such term is defined in the Term Loan Agreement and any breach in any material respect of any representation or warranty made herein or any breach of any covenant or agreement contained herein will constitute an Event of Default under the Term Loan Agreement.

4.3The execution, delivery and effect of this Amendment shall be limited precisely as written and shall not be deemed to (i) be a consent to any waiver of any term or condition or to any amendment or modification of any term or condition of the Term Loan Agreement or any of the other Loan Documents, except upon the effectiveness of this Amendment, as specifically amended in Section 1 above, or (ii) prejudice any right, power or remedy which the Administrative Agent or any Lender now has or may have in the future under or in connection with the Term Loan Agreement or any of the other Loan Documents.  This Amendment embodies the entire agreement and understanding among the Borrower, the Lenders, and the Administrative Agent in respect of the amendment of the terms and conditions of the Term Loan Agreement as provided herein.  Upon the effectiveness of this Amendment, each reference in the Term Loan Agreement to “this Agreement”, “hereunder”, “hereof”, “herein” or any other word or words of similar import shall mean and be a reference to the Term Loan Agreement as amended hereby, and each reference in any of the other Loan Documents to the Term Loan Agreement or any word or words of similar import shall mean and be a reference to the Term Loan Agreement as amended hereby.

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Section 5. Miscellaneous.

5.1Miscellaneous.  This Amendment shall for all purposes be construed in accordance with and governed by the laws of the State of New York and applicable federal law.  The captions in this Amendment are for convenience of reference only and shall not define or limit the provisions hereof.  This Amendment may be executed in separate counterparts, each of which when so executed and delivered shall be an original, but all of which together shall constitute one instrument.  In proving this Amendment, it is not necessary to produce or account for more than one such counterpart.  Delivery of an executed counterpart of this Amendment by facsimile or in electronic form shall be effective as the delivery of a manually executed counterpart.

5.2Severability.  The illegality or unenforceability of any provision of this Amendment or any instrument or agreement required hereunder shall not in any way affect or impair the legality or enforceability of the remaining provisions of this Amendment or any instrument or agreement required hereunder.

5.3Entire Agreement.  THE TERM LOAN AGREEMENT (AS AMENDED BY THIS AMENDMENT) AND THE OTHER LOAN DOCUMENTS REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES.  THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

5.4Modification and Waiver.  No waiver or modification of this Amendment shall be effective unless the same shall be in writing and signed by all parties hereto.

[SIGNATURE PAGE FOLLOWS]

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IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed on the date first above written.

TC PIPELINES, LP

By: TC PipeLines GP, Inc.,

its General Partner

By:  /s/Nathaniel A. Brown                                          

Name:   Nathaniel A. Brown

Title:     Controller and Principal Financial Officer

By: /s/Jon A. Dobson                                               

Name:    Jon A. Dobson

Title:      Secretary

Signature Page to

TC PipeLines, LP Amendment No. 1

BANK OF AMERICA, N.A., as the Administrative Agent and as a Lender

By: /s/Adrian Plummer                           
Name: Adrian PlummerTitle: Associate

Signature Page to

TC PipeLines, LP Amendment No. 1

Schedule I

APPLICABLE MARGIN FOR TERM LOANS

Pricing Level	Ratings Category	Applicable Margin for  Eurodollar Term Loans	Applicable Margin for Base Rate Term Loans
I	≥ Baa1 / BBB+	1.00% per annum	0.00% per annum
II	Baa2 / BBB	1.125% per annum	0.125% per annum
III	Baa3 / BBB-	1.45% per annum	0.45% per annum
IV	Ba1/BB+	1.75% per annum	0.75% per annum
V	˂ Ba1/BB+	2.00% per annum	1.00% per annum

Schedule 4.14

SUBSIDIARIES

[See attached.]

EX-99.3

Exhibit 99.3

FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT

THIS FIRST AMENDMENT TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT (this “Amendment”), is made and entered into as of September 29, 2017 but given effect as of October 2, 2017, by and among TC PIPELINES, LP., a Delaware limited partnership (the “Borrower”), the banks and other financial institutions party hereto constituting the Required Lenders under the Credit Agreement described below (collectively, the “Required Lenders”) and SUNTRUST BANK, in its capacity as Administrative Agent for the Lenders (the “Administrative Agent”).

W I T N E S S E T H:

WHEREAS, the Borrower, the lenders from time to time party thereto (collectively, the “Lenders”) and the Administrative Agent are parties to a certain Third Amended and Restated Revolving Credit Agreement, dated as of November 10, 2016, (as may be amended, restated, supplemented or otherwise modified from time to time, the “Credit Agreement”; capitalized terms used herein and not otherwise defined shall have the meanings assigned to such terms in the Credit Agreement), pursuant to which such Lenders have made certain financial accommodations available to the Borrower;

WHEREAS, the Borrower has requested that each of the Required Lenders and the Administrative Agent amend certain provisions of the Credit Agreement as set forth below, and subject to the terms and conditions hereof, the Required Lenders are willing to do so;

NOW, THEREFORE, for good and valuable consideration, the sufficiency and receipt of all of which are acknowledged, the parties agree as follows:

1.Amendments.

(a)         Section 1.1 of the Credit Agreement is hereby amended by replacing the definitions of “Affiliate”, “Federal Funds Rate”, “Indebtedness”, ‘LIBOR”, “Material Adverse Effect”, “Significant Subsidiary” and “Subsidiary” in their entirety with the following:

“Affiliate” shall mean, as to any Person, any other Person that, directly or indirectly, controls, is controlled by or is under common control with such Person or is a director or officer of such Person.  For purposes of this definition the term “control” (including the terms “controlling”, “controlled by” and “under common control with”) of a Person shall mean the possession, direct or indirect, of the power to direct or cause the direction of the management and policies of such Person, whether through the ownership of voting stock, by contract or otherwise, provided, that, for purposes of Section 7.6, each of Northern Border, GLGT and Iroquois shall be deemed to be an Affiliate of the Borrower as long as it qualifies as a Significant Subsidiary.

“Federal Funds Rate” shall mean, for any day, the rate per annum equal to the weighted average of the rates on overnight Federal funds transactions with member banks of the Federal Reserve System, as published by the Federal Reserve Bank of New York on the next succeeding Business Day or, if such rate is not so published for any Business Day, the Federal Funds Rate for such day shall be the average of the quotations for such day on such transactions received by the Administrative Agent from three Federal funds brokers of recognized standing selected by the Administrative Agent (provided that if such rate is less than zero, such rate shall be deemed to be zero).

“Indebtedness” of any Person shall mean, without duplication, (i) all obligations of such Person for borrowed money, (ii) all obligations of such Person evidenced by bonds, debentures, notes or other similar instruments, (iii) all obligations of such Person in respect of the deferred purchase price of property or services (other than trade payables incurred in the ordinary course of business), (iv) all obligations of such Person under any conditional sale or other title retention agreement(s) relating to property acquired by such Person, (v) all Capital Lease Obligations of such Person, (vi) all obligations, contingent or otherwise, of such Person in respect of letters of credit, acceptances or similar extensions of credit, (vii) all Guarantees of such Person of the type of Indebtedness described in clauses (i) through (vi) above, (viii) all Indebtedness of a third party secured by any Lien on property owned by such Person, whether or not such Indebtedness has been assumed by such Person, (ix) all obligations of such Person to purchase, redeem, retire or otherwise acquire for value any common stock of such Person, (x) Off-Balance Sheet Liabilities and (xi) all Hedging Obligations; provided, however, that Indebtedness attributable to the Borrower or a Subsidiary under the PXP Precedent Agreement shall include only those liabilities under the PXP Precedent Agreement that would be required under the loss contingency recognition principles in ASC 450 to be reflected on the consolidated balance sheet of the Borrower on the date of determination.  The Indebtedness of any Person shall include the Indebtedness of any partnership or joint venture in which such Person is a general partner or a joint venturer, except to the extent that the terms of such Indebtedness provide that such Person is not liable therefor.

“LIBOR” shall mean, for any applicable Interest Period with respect to any Eurodollar Loan, the rate per annum appearing on Reuters Screen LIBOR01 Page (or any successor page) as the London interbank offered rate for Dollar deposits as of 11:00 a.m. (London, England time) on the day that is two Business Days prior to the first day of the Interest Period; provided, that if the Administrative Agent determines that the relevant foregoing sources are unavailable for the relevant Interest Period, LIBOR shall mean the rate of interest determined by the Administrative Agent to be the average of the rates per annum at which deposits in Dollars are offered to the Administrative Agent two (2) Business Days preceding the first day of such Interest Period by leading banks in the London interbank market as of 10:00 a.m. (New York time) for delivery on the first day of such Interest Period, for the number of days comprised therein and in an amount comparable to the amount of the Eurodollar Loan of the Administrative Agent (provided that if such rate is less than zero, such rate shall be deemed to be zero).

“Material Adverse Effect” shall mean, with respect to any event, act, condition or occurrence of whatever nature (including any adverse determination in any litigation, arbitration, or governmental investigation or proceeding), whether singularly or in conjunction with any other event or events, act or acts, condition or conditions, occurrence or occurrences whether or not related, a material adverse change in, or a material adverse effect on, (i) the business, results of operations, financial condition, assets, or liabilities of the Borrower, its Subsidiaries, Northern Border, GLGT and Iroquois, taken as a whole, (ii) the ability of the Borrower  to perform any of its obligations under the Loan Documents, (iii) the rights and remedies of the Administrative Agent, the Issuing Bank, Swingline Lender, and the Lenders under any of the Loan Documents or (iv) the legality, validity or enforceability of any of the Loan Documents.

“Significant Subsidiary” shall have the meaning specified in Article 1, Rule 1-02(w) of Regulation S-X of the Securities Exchange Act of 1934 as of the Effective Date, provided, that, even if Northern Border, GLGT and Iroquois would not otherwise constitute a Subsidiary of the Borrower, each of Northern Border, GLGT and Iroquois shall be deemed to be a Significant Subsidiary of the Borrower if it would otherwise qualify as a Significant Subsidiary under Article 1, Rule 1-02(w) of Regulation S-X as of the First Amendment Date.

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“Subsidiary” shall mean, with respect to any Person (the “parent”), any corporation, partnership, joint venture, limited liability company, association or other entity the accounts of which would be consolidated with those of the parent in the parent’s consolidated financial statements if such financial statements were prepared in accordance with GAAP as of such date, as well as any other corporation, partnership, joint venture, limited liability company, association or other entity (i) of which securities or other ownership interests representing more than 50% of the equity or more than 50% of the ordinary voting power, or in the case of a partnership, more than 50% of the general partnership interests are, as of such date, owned, controlled or held, or (ii) that is, as of such date, otherwise controlled, by the parent or one or more subsidiaries of the parent or by the parent and one or more subsidiaries of the parent.  Unless otherwise indicated, all references to “Subsidiary” hereunder shall mean a Subsidiary of the Borrower.  For the avoidance of doubt, (a) Northern Border and GLGT are not Subsidiaries of the Borrower as of the Closing Date, (b) as of June 1, 2017, Iroquois is not a Subsidiary of the borrower and (c) as of June 1, 2017, PNGTS is a Subsidiary of the Borrower; provided, that each of Northern Border, GLGT and Iroquois shall be automatically deemed Subsidiaries of the Borrower if clause (i) of this definition becomes applicable to it.

(b)            Section 1.1 of the Credit Agreement is further amended by adding the following new definitions in proper alphabetical order:

“ASC” shall mean Accounting Standards Codification of the Financial Accounting Standards Board.

“First Amendment Effective Date” shall mean October 2, 2017.

“Iroquois” shall mean Iroquois Gas Transmission System, L.P., a Delaware limited partnership.

“Iroquois Partnership Agreement” shall mean that certain Third Amended and Restated Limited Partnership Agreement of Iroquois Gas Transmission System, L.P., dated as of May 1, 2016, as amended by that certain Counterpart and First Amendment effective as of 12:01 Eastern time on June 1, 2007, and as may be further amended, supplemented, restated or otherwise modified from time to time.

 “PXP Precedent Agreement” shall mean the precedent agreement to be entered into by PNGTS for firm natural gas transportation service from TransCanada PipeLines Limited relating to the delivery of natural gas from the Union Dawn receipt point to the East Hereford delivery point into the PNGTS system, as the same may be amended, restated, supplemented or otherwise modified from time to time.

(c)           Section 1.1 of the Credit Agreement is further amended by deleting in its entirety the definition of “PNGTS Partnership Agreement”.

(d)          Section 1.1 of the Credit Agreement is further amended by replacing the proviso at the end of clause (v) of the definition of Defaulting Lender in its entirety with the following:

provided that a Lender shall not be a Defaulting Lender pursuant to this clause (v) solely by virtue of the ownership or acquisition of any equity interest in that Lender or any direct or indirect parent company thereof by a Governmental Authority so long as such ownership interest does not result in or provide such Lender with immunity from the jurisdiction of courts within the United States or from the enforcement of judgments or writs of attachment on its assets or permit such Lender (or such Governmental Authority) to reject, repudiate, disavow or disaffirm any contracts or agreements made with such Lender.

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(e)           Section 4.4 of the Credit Agreement, is hereby amended by replacing subsection (b) in its entirety with the following:

(b)          Since December 31, 2016, there have been no changes with respect to the Borrower, its Subsidiaries, Northern Border and GLGT which have had or could reasonably be expected to have, singly or in the aggregate, a Material Adverse Effect.  Since June 1, 2017, to the Borrower’s knowledge, there have been no changes with respect to Iroquois which have had or could reasonably be expected to have, singly or in the aggregate, a Material Adverse Effect.

(f)           Section 4.14 of the Credit Agreement is hereby amended by replacing in its entirety such section with the following:

Section 4.14.          Subsidiaries.  Schedule 4.14 attaches a true and complete organizational chart of the Borrower and all of its Subsidiaries (including the ownership of Northern Border, GLGT and Iroquois), in each case as of the First Amendment Effective Date, which Schedule the Borrower shall update upon notice to the Administrative Agent promptly following the completion of any material Permitted Acquisition and promptly following the incorporation, organization or formation of any material Subsidiary.

(g)          Section 7.3 of the Credit Agreement is hereby amended by replacing subsection (d) in its entirety with the following:

(d)          So long as Iroquois is a Significant Subsidiary of the Borrower, the Borrower shall not provide its consent to, or vote to, permit Iroquois to lease, sell or otherwise dispose of its assets to any other Person except: (i) sales of inventory, investments, and other assets in the ordinary course of business, (ii) leases, sales or other dispositions of its assets that, together with all other assets of Iroquois previously leased, sold or disposed of (other than disposed of pursuant to this Section 7.3(e)) during the twelve-month period ending with the month in which any such lease, sale or other disposition occurs, do not constitute a substantial portion of the assets of Iroquois, (iii) sales of assets which are concurrently leased back, (iv) dispositions of assets which are obsolete or no longer used or useful in the business of Iroquois, and (v) as permitted pursuant to the Iroquois Partnership Agreement as in effect on the First Amendment Effective Date.

(h)          Section 7.10 of the Credit Agreement is hereby amended by replacing in its entirety such section with the following:

Section 7.10            Certain Amendments to Cash Distribution Policies and Partnership Agreements.   The Borrower agrees that it shall not consent to, or vote in favor of, or, in the case of any of the following that is applicable to a Subsidiary, permit, any amendment of (a) the cash distribution policies of the Borrower, TC PipeLines ILP, TC GL ILP, Tuscarora ILP, Northern Border, GLGT, Tuscarora or Iroquois in any manner which would materially adversely affect the rights and remedies of the Lenders under and in connection with this Agreement, the Notes or any other Loan Document; or (b) the Borrower Partnership Agreement, the TC PipeLines ILP Partnership Agreement, the Tuscarora ILP Partnership Agreement, the Northern Border Partnership Agreement, the TC GL Partnership Agreement, the GLGT Partnership Agreement, the Tuscarora Partnership Agreement or the Iroquois Partnership Agreement in any manner which would (i) have a material adverse effect on the rights and remedies of the Lenders under and in connection with this Agreement, the Notes or any other Loan Document; or (ii) result in a Material Adverse Effect.

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(i)           Section 7.13 of the Credit Agreement is hereby amended by replacing in its entirety such section with the following:

Section 7.13          Sanctions. The Borrower will not, and will not permit any Subsidiary to, use the proceeds of any Loans hereunder (i) for the purpose of funding, financing or facilitating any activities, business or transactions of or with any Sanctioned Person or any Canadian Sanctioned Person, or in any Sanctioned Country or in any Canadian Sanctioned Country, or (ii) in any manner that would result in the violation of any Sanctions or Canadian Sanctions applicable to any party hereto.

(j)           Schedule 4.14 of the Credit Agreement is hereby amended by replacing such schedule in its entirety with Schedule 4.14 hereto.

2.        Conditions to Effectiveness of this Amendment.  Notwithstanding any other provision of this Amendment and without affecting in any manner the rights of the Lenders hereunder, it is understood and agreed that this Amendment shall not become effective, and the Borrower shall have no rights under this Amendment, until the Administrative Agent shall have received:

(a)          a counterpart of this Amendment signed by or on behalf of each party hereto or written evidence satisfactory to the Administrative Agent (which may include telecopy or other electronic transmission of a signed signature page of this Amendment) that such party has signed a counterpart of this Amendment;

(b)          a copy of that certain Second Amendment to Term Loan Agreement, dated as of the date hereof, duly executed and delivered by the parties thereto;

(c)          a certificate of the Secretary or Assistant Secretary of the General Partner in the form of Exhibit 3.1(b)(iv) to the Credit Agreement, attaching and certifying copies of (i) the articles or certificate of incorporation, certificate of organization or limited partnership, or other registered organizational documents of the Borrower and the General Partner, (ii) the bylaws, the partnership agreement, or comparable organizational documents and authorizations of the Borrower and the General Partner and (iii) resolutions of the board of directors or comparable governing body of the General Partner and the General Partner on behalf of the Borrower, authorizing the execution, delivery and performance of the Loan Documents by the Borrower;

(d)certificates of good standing or existence, as may be available from the Secretary of State of the jurisdiction of organization of the Borrower and the General Partner, and copies of online verification statements of good standing or existence for each other jurisdiction where the Borrower is required to be qualified to do business as a foreign corporation;

(e)a certificate signed by a Responsible Officer, certifying the name, title and true signature of each officer of the General Partner executing the Loan Documents on behalf of the Borrower to which the Borrower is a party; and

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(f)reimbursement or payment of the Administrative Agent’s costs and expenses incurred in connection with this Amendment or the Credit Agreement (including reasonable fees, charges and disbursements of King & Spalding LLP, counsel to the Administrative Agent).

3.Representations and Warranties.  To induce the Required Lenders and the Administrative Agent to enter into this Amendment, the Borrower hereby represents and warrants to the Lenders and the Administrative Agent:

(a)The Borrower and each of its Subsidiaries (i) is duly orga-nized, validly existing and in good standing as a corporation, partnership or limited liability company under the laws of the jurisdiction of its organization, (ii) -has all requisite power and authority to carry on its business as now conducted, and (iii) is duly qualified to do business, and is in good standing, in each jurisdiction where such qualification is required, except where a failure to be so qualified could not reasonably be expected to result in a Material Adverse Effect;

(b)    The execution, delivery and performance by the Borrower of this Amendment are within the Borrower’s organizational powers and have been duly authorized by all necessary organizational, and if required, general partner action.  This Amendment has been duly executed and delivered by the Borrower, andconstitutes a valid and binding obligation of the Borrower, enforceable against it in accordance with its terms, except as may be limited by applicable bankruptcy, insolvency, reorganization, moratorium, or similar laws affecting the enforcement of creditors’ rights generally and by general principles of equity;

(c)The execution, delivery and performance by the Borrower of this Amendment (i) do not require any consent or approval of, registration or filing with, or any action by, any Governmental Authority, except those as have been obtained or made and are in full force and effect, (ii) will not violate any Requirements of Law applicable to Borrower or any of its Subsidiaries or any judgment, order or ruling of any Governmental Authority, (iii) will not violate or result in a default under any indenture, material agreement or other material instrument binding on the Borrower or any of its Subsidiaries or any of its assets or give rise to a right thereunder to require any payment to be made by the Borrower or any of its Subsidiaries and (iv) will not result in the creation or imposition of any Lien on any asset of the Borrower or any of its Subsidiaries, except Liens (if any) created under the Loan Documents; and

(d)After giving effect to this Amendment, the representations and warranties contained in the Credit Agreement and the other Loan Documents are true and correct in all material respects (other than representations and warranties expressly stated to be made as of an earlier date), and no Default or Event of Default has occurred and is continuing as of the date hereof.

4.Effect of Amendment.  Except as set forth expressly herein, all terms of the Loan Documents shall be and remain in full force and effect and shall constitute the legal, valid, binding and enforceable obligations of the Borrower to the Lenders and the Administrative Agent.  This Amendment shall constitute a Loan Document for all purposes of the Credit Agreement.

5.Governing Law.   This Amendment shall be governed by, and construed in accordance with, the internal laws of the State of New York and all applicable federal laws of the United States of America.

6.No Novation.  This Amendment is not intended by the parties to be, and shall not be construed to be, a novation of the Credit Agreement or an accord and satisfaction in regard thereto.

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7.Costs and Expenses.  The Borrower agrees to pay on demand all reasonable out-of-pocket costs and expenses of the Administrative Agent in connection with the preparation, execution and delivery of this Amendment, including, without limitation, the reasonable fees and out-of-pocket expenses of outside counsel for the Administrative Agent with respect thereto.

8.Counterparts.  This Amendment may be executed by one or more of the parties hereto in any number of separate counterparts, each of which shall be deemed an original and all of which, taken together, shall be deemed to constitute one and the same instrument.  Delivery of an executed counterpart of this Amendment by facsimile transmission or by electronic mail in pdf form shall be as effective as delivery of a manually executed counterpart hereof.

9.Binding Nature.  This Amendment shall be binding upon and inure to the benefit of the parties hereto, their respective successors, successors-in-titles, and assigns.

10.              Entire Understanding.  This Amendment sets forth the entire understanding of the parties with respect to the matters set forth herein, and shall supersede any prior negotiations or agreements, whether written or oral, with respect thereto.

11.              Severability.  Any provision of this Amendment held to be illegal, invalid or unenforceable in any jurisdiction, shall, as to such jurisdiction, be ineffective to the extent of such illegality, invalidity or unenforceability without affecting the legality, validity or enforceability of the remaining provisions hereof or thereof; and the illegality, invalidity or unenforceability of a particular provision in a particular jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction.

[Signature Pages To Follow]

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IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed by their respective authorized officers as of the day and year first above written.

BORROWER:

TC PIPELINES, LP

By: TC PipeLines GP, Inc., its General Partner

By:  /s/Nathaniel A. Brown                                          

Name:   Nathaniel A. Brown

Title:     Controller and Principal Financial Officer

By: /s/Jon A. Dobson                                               

Name:    Jon A. Dobson

Title:      Secretary

[SIGNATURE PAGE TO FIRST AMENDMENT TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]

ADMINISTRATIVE AGENT:

SUNTRUST BANK, as Administrative Agent and a Lender

By: /s/Carmen Malizia                                   

Name: Carmen Malizia

Title:  Director

[SIGNATURE PAGE TO FIRST AMENDMENT TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]

 MIZUHO BANK, LTD, as a Lender

By: /s/Brad C. Crilly                              

Name: Brad C. Crilly

Title: Managing Director

[SIGNATURE PAGE TO FIRST AMENDMENT TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]

 Export Development Canada, as a Lender

By: /s/Sheila Banning                              

Name: Sheila Banning

Title: Financing Manager

By: /s/Christiane de Billy                                

Name:  Christiane de Billy 

Title: Senior Financing Manager 

[SIGNATURE PAGE TO FIRST AMENDMENT TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]

 JP Morgan Chase Bank, N.A., as a Lender

By: /s/Juan J. Javellana                             

Name: Juan J. Javellana

Title: Executive Director

[SIGNATURE PAGE TO FIRST AMENDMENT TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]

 CITIBANK, N.A., as a Lender

By: /s/Eamon Baqui                             

Name: Eamon Baqui

Title: Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]

DEUTSCHE BANK AG NEW YORK BRANCH, as a Lender

By: /s/Virginia Cosenza                              

Name: Virginia Cosenza

Title: Vice President

By: /s/Ming K. Chu                                      

Name:  Ming K. Chu 

Title: Director 

[SIGNATURE PAGE TO FIRST AMENDMENT TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]

 The Bank of Tokyo-Mitsubishi UFJ, Ltd., as a Lender

By: /s/Kevin Sparks                                    

Name: Kevin Sparks

Title: Director

[SIGNATURE PAGE TO FIRST AMENDMENT TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]

HSBC Bank USA, National Association, as a Lender

By: /s/Christopher Samms                             

Name: Christopher Samms

Title: Senior Vice President, #9426

[SIGNATURE PAGE TO FIRST AMENDMENT TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]

 WELLS FARGO BANK, N.A., as a Lender

By: /s/Nathan Starr                                

Name: Nathan Starr

Title: Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO THIRD AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT]

Schedule 4.14

Subsidiaries

[see attached]