William R. Levi is a Partner at Sidley Austin in Washington, D.C., where he focuses on antitrust and competition, regulatory litigation, and white collar defense and investigations. Drawing on his extensive experience in senior roles at the U.S. Department of Justice and the U.S. Senate, William represents clients in high-stakes government enforcement actions, congressional investigations, and complex litigation. He has a notable background in supervising high-profile civil litigation, criminal investigations, and national security matters. William has also clerked for U.S. Supreme Court Justice Samuel A. Alito, Jr. and serves on the U.S. Court of Appeals for the D.C. Circuit's Advisory Committee on Procedures. He is an elected member of the American Law Institute.
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