TRUMP v. MAZARS USA, LLP

No. 19-5142.

940 F.3d 710 (2019)

Donald J. TRUMP, et al., Appellants v. MAZARS USA, LLP and Committee on Oversight and Reform of the U.S. House of Representatives, Appellees.

United States Court of Appeals, District of Columbia Circuit.

Decided October 11, 2019.


Attorney(s) appearing for the Case

William S. Consovoy , Arlington, argued the cause for appellants. With him on the briefs were Cameron T. Norris and Stefan C. Passantino , Washington.

Duane Morley Cox, pro se, filed the brief for amicus curiae Duane Morley Cox in support of appellants.

Douglas N. Letter , General Counsel, U.S. House of Representatives, argued the cause for appellee Committee on Oversight and Reform of the U.S. House of Representatives. With him on the briefs were Todd B. Tatelman , Deputy General Counsel, Megan Barbero and Josephine Morse , Associate General Counsel, and Brooks M. Hanner , Assistant General Counsel.

Elizabeth B. Wydra , Francisco, Brianne J. Gorod , and Ashwin P. Phatak were on the brief for amicus curiae Constitutional Accountability Center in support of intervenor-defendant-appellee Committee on Oversight and Reform of the U.S. House of Representatives.

Hashim M. Mooppan , Deputy Assistant Attorney General, U.S. Department of Justice, and Mark R. Freeman , Scott R. McIntosh , and Gerard Sinzdak , Attorneys, were on the brief as amicus curiae The United States.

Before: Tatel, Millett and Rao, Circuit Judges.


On April 15, 2019, the House Committee on Oversight and Reform issued a subpoena to the accounting firm Mazars USA, LLP for records related to work performed for President Trump and several of his business entities both before and after he took office. According to the Committee, the documents will inform its investigation...

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