Douglas H. Ginsburg, Judge, US Court of Appeals for the District of Columbia and Professor of Law, Antonin Scalia Law School, George Mason University. Judge Ginsburg is a leading authority on competition law and policy, administrative law, and law and economics. In his distinguished career, he has been a professor of law at Harvard University (1975-1983); held a number of posts in the executive branch of federal government (1983-1986), including assistant attorney general for antitrust in the US Department of Justice; and was then appointed to the US Court of Appeals in 1986 by President Ronald Reagan, serving as chief judge from 2001 to 2008. In addition to teaching law school classes Antitrust and Readings in Legal Thought, Judge Ginsburg teaches and lectures for the Law & Economics Center.