POWER OF ATTORNEY

       KNOW ALL MEN BY THESE PRESENTS, that the undersigned Director and/or
Executive Officer of HSBC USA Inc. (the Company) hereby constitutes and appoints
each of the persons holding the position of Secretary, Corporate Secretary,
Assistant Corporate Secretary or Assistant Secretary of the Company from time to
time, acting singly, the undersigned's true and lawful attorney-in-fact to:

       (1)   execute and file Form ID for the purpose of obtaining EDGAR access
       codes on behalf of the undersigned;

       (2)   execute for and on behalf of the undersigned, in the undersigned's
       capacity as an officer and/or director of the Company, Forms 3, 4 and 5,
       and any successor forms thereto, (each, a Form and collectively, the
       Forms) in accordance with Section 16(a) of the Securities and Exchange
       Act of 1934 and the rules thereunder;

       (3)   do and perform any and all acts for and on behalf of the
       undersigned which may be necessary or desirable to complete and execute
       any such Form, complete and execute any amendment or amendments thereto,
       and timely file such Form with the U.S. Securities and Exchange
       Commission and any stock exchange or market or similar authority; and

       (4)   take any other action of any type whatsoever in connection with the
       foregoing which, in the opinion of such attorney-in-fact, may be of
       benefit to, in the best interest of, or legally required by, the
       undersigned, it being understood that the documents executed by such
       attorney-in-fact on behalf of the undersigned pursuant to this Power of
       Attorney shall be in such form and shall contain such terms and
       conditions as such attorney-in-fact may approve in such attorney-in-facts
       discretion.

       The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-facts substitute or substitutes, shall
lawfully do or cause to be done by virtue of this Power of Attorney and the
rights and powers herein granted. The undersigned acknowledges that the
foregoing attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities and
Exchange Act of 1934.

       This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms with respect to the
undersigned's holdings of and transactions in securities and derivative
securities issued by the Company, unless earlier revoked by the undersigned in a
signed writing delivered to the foregoing attorneys-in- fact, and it supersedes
any Power of Attorney previously executed by the undersigned with respect to the
filing of Forms required by Section 16 of the Securities and Exchange Act of
1934.

       IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 31st day of May 2013.

/s/ Phillip D. Ameen
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Phillip D. Ameen