No political experience information on file.

No caucus information on file.

Professor of Law, George Mason University, 2013-present

Senior Judge, United States Court of Appeals, District of Columbia Circuit, 2011-present

Visiting Senior Lecturer, University of Chicago, 1990-present

Professor of Law, New York University Law School, 2011-2013

Lecturer in Law, Columbia University, 2009-2011

Judge, United States Court of Appeals, District of Columbia Circuit, 1986-2001, 2008-2011

Distinguished Adjunct Professor of Law, George Mason University, 1988-2010

Distinguished Visiting Scholar,, New York Law School, 2006-2009

Chief Judge, United States Court of Appeals, District of Columbia Circuit, 2001-2008

Lecturer on Law, Harvard University, 1988-1989

Visiting Professor of Law, Columbia University, 1987-1988

Assistant Attorney General, Antitrust Division, United States Department of Justice, 1985-1986

Confirmed by the United States Senate, Judge, United States Court of Appeals, District of Columbia Circuit, October 8, 1986

Nominated by President Ronald Reagan, Judge, United States Court of Appeals, District of Columbia Circuit, September 23, 1986

Administrator, Information and Regulatory Affairs, United States Office of Management and Budget, 1984-1985

Deputy Assistant Attorney General, Antitrust Division, United States Department of Justice, 1983-1984

Professor of Law, Harvard University, 1975-1983

Law Clerk, Justice Thurgood Marshall, Supreme Court of the United States, 1974-1975

Law Clerk, Honorable Carl McGowan, United States Court of Appeals, District of Columbia Circuit, 1973-1974

Member, Judicial Conference of the United States, 2001-2008