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This content is provided by Peter Keisler
Former Acting Attorney General of the United States, Peter Keisler is a co-leader of Sidley’s Supreme Court and Appellate practice and a member of the Executive Committee. Peter has successfully represented some of the country’s largest companies in the telecommunications, transportation, energy and healthcare industries, as well as a host of national trade associations, providing extensive insight and experience gained from his more than 30 years of private and public sector experience.
Representative matters include:
United States of America v. AT&T & Time Warner, 916 F.3d 1029 (D.C. Cir. 2019);
Utility Air Regulatory Group v. EPA, 134 S. Ct. 2427 (2014);
United States ex rel. Fair Laboratory Practices Associates v. Quest Diagnostics Incorporated, 734 F.3d 154 (2d Cir. 2013);
National Association of Manufacturers v. SEC, 800 F.3d 518 (2015)
Peter started his career at Sidley as an associate in 1989 after completing a clerkship for Justice Anthony Kennedy. In 2002 he joined the Department of Justice as the Principal Deputy Associate Attorney General. Peter spent most of his more than five-year tenure at DOJ as the Assistant Attorney General for the Civil Division, and ultimately served as Acting Attorney General of the United States. He returned to Sidley in 2008.