Peter Keisler Sidley Austin LLP Peter Keisler is a global coordinator of the appellategroup for Sidley Austin LLP in the firm’s Washington,D.C., office. Prior to rejoining Sidley, Mr. Keislerserved as the Acting Attorney General of the UnitedStates. In his capacity as the chief law enforcementofficer of the country, he directed the work of theDepartment of Justice, including its investigativeagencies and litigating divisions.