Geoffrey R. Stone is the Harry Kalven, Jr. Distinguished Service Professor of Law at the University of Chicago. He served as law clerk to Supreme Court Justice William J. Brennan, Jr. during the Supreme Court’s 1972 Term. He has been a member of the faculty of the University of Chicago since 1973, and served as University of Chicago Dean of the Law School from 1987 to 1994 and as Provost of the University of Chicago from 1994 to 2002. He has been an editor of the Supreme Court Review since 1991, and he is a member of the American Law Institute and a Fellow of the American Academy of Arts and Sciences. He is the author or co-author of many scholarly articles and several books on constitutional law, including most recently Perilous Times: Free Speech in Wartime from the Sedition Act of 1798 to the War on Terrorism (W. W. Norton 2004) and Eternally Vigilant: Free Speech in the Modern Era (Chicago 2002). In addition to his teaching and scholarly activities, he has often participated in constitutional litigation, representing, for example, President Bill Clinton in the Supreme Court in the Paula Jones case, and Fred Korematsu, one of 120,000 individuals of Japanese descent who were interned by the United States during World War II, as a “friend of the court” in the 2004 Guantanamo Bay case in the Supreme Court.