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Exhibit 23.3

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors of TC PipeLines GP, Inc., General Partner of TC PipeLines, LP:

We consent to the use of our report dated February 27, 2007 with respect to the balance sheets of Northern Border Pipeline Company as of December 31, 2006 and 2005, and the related statements of income, comprehensive income, cash flows, and changes in partners' equity for each of the years in the three-year period ended December 31, 2006, and the related financial statement schedule, incorporated herein by reference, and to the reference to our firm under the heading "experts" in the prospectus.

/s/  KPMG LLP

Omaha, Nebraska

July 30, 2007

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CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM