John Yoo is a professor of law at the University of California at Berkeley School of Law (Boalt Hall) and a visiting scholar at the American Enterprise Institute. From 2001 to 2003 he served as Deputy Assistant Attorney General in the Office of Legal Council in the Justice Department of President George W. Bush. Richard A. Epstein, the Peter and Kirsten Bedford Senior Fellow at the Hoover Institution, is the Laurence A. Tisch Professor of Law, New York University Law School, and a senior lecturer at the University of Chicago.