Jefferson Powell is a professor of law at Duke University where he teaches courses on constitutional law and history and directs Duke’s First Amendment Clinic. He has served as a deputy assistant attorney general and as the principal deputy solicitor general in the U.S. Department of Justice, and as special counsel to the attorney general of North Carolina. As a scholar, his interests include the Constitution’s distribution of authority over foreign policy, the history of constitutional-law decision making, and the ethical dimensions of the roles of judge and legal advisor. Among his books are Constitutional Conscience: The Moral Dimension of Judicial Decision and Targeting Americans: The Constitutionality of the U.S. Drone War. Powell received a B.A. from St. David’s College (now Trinity St. David) of the University of Wales, a J.D. from Yale, and a Ph.D. from Duke.