Comerica 2012 Annual Report Download - page 154

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F-120
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
Board of Directors and Shareholders
Comerica Incorporated
We have audited the accompanying consolidated balance sheets of Comerica Incorporated and subsidiaries as of December 31,
2012 and 2011, and the related consolidated statements of income and comprehensive income, changes in shareholders' equity
and cash flows for each of the three years in the period ended December 31, 2012. These financial statements are the responsibility
of the Corporation's management. Our responsibility is to express an opinion on these financial statements based on our audits.
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States).
Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements
are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures
in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable
basis for our opinion.
In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position
of Comerica Incorporated and subsidiaries at December 31, 2012 and 2011, and the consolidated results of their operations and
their cash flows for each of the three years in the period ended December 31, 2012, in conformity with U.S. generally accepted
accounting principles.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States),
Comerica Incorporated and subsidiaries' internal control over financial reporting as of December 31, 2012, based on criteria
established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway
Commission and our report dated February 19, 2013 expressed an unqualified opinion thereon.
/s/ Ernst & Young LLP
Dallas, Texas
February 19, 2013