POWER OF ATTORNEY



                           Melinda A. Chausse



 Know all by these presents, that the undersigned hereby constitutes and

appoints each of John D. Buchanan, Nicole V. Gersch, Jennifer S. Perry and

Owen M. Scheurich, signing singly, the undersigned's true and lawful

attorney-in-fact to:



 (1) execute for and on behalf of the undersigned Forms 3, 4 and 5 in

                accordance with Section 16(a) of the Securities Exchange Act of

                1934 and the rules thereunder and Form 144 with respect to the

                securities of Comerica Incorporated (the "Company") beneficially

                owned by the undersigned in accordance with Rule 144 under the

                Securities Act of 1933 (the "Securities Act");



 (2) execute for and on behalf of the undersigned documents necessary

                to facilitate the filing of Forms 3, 4 and 5 and Form 144;



 (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 3, 4 or 5 or Form 144, complete and

  execute any amendment or amendments thereto, and timely file

  such form with the United States Securities and Exchange

  Commission and any stock exchange 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-fact's

  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 all 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-fact's 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

Exchange Act of 1934 or Rule 144 under the Securities Act.















 The termination of any attorney-in-fact's employment by the Company,

however caused, shall operate as a termination of his or her powers and

authorities hereunder, but shall not affect the powers and authorities herein

granted to any other party.



 This Power of Attorney shall remain in full force and effect until six

months from the date the undersigned is terminated or removed, or resigns or

retires from the Company, unless earlier revoked by the undersigned in a signed

writing delivered to the foregoing attorneys-in-fact at the then current

mailing address of the Corporate Legal Department of Comerica Incorporated.



 All Powers of Attorney previously granted in connection with the

foregoing matters hereby are canceled and revoked.



 IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney

to be executed and made effective as of the 7th day of April, 2020.





/s/  Melinda A. Chausse

____________________________________

 Melinda A. Chausse