Adjunct Professor, University of Chicago (1994–present)
Adjunct Professor, Georgetown University, Administrative Law (1995)
Adjunct Professor, George Mason University, Appellate Litigation (1994–95, 1997, 1999)
Member, Board of Visitors, University of Chicago Law School
Chairman, Administrative Law Practice Group, Federalist Society
Member, American Law Institute, American Academy of Appellate Lawyers
Member, Court Appointed Scientific Experts Advisory Committee, American Association for the Advancement of Sciences