Keith E. Whittington is the William Nelson Cromwell Professor of Politics at Princeton University. He writes about American constitutional law, politics and history and American political thought. He has been a visiting professor at the University of Texas School of Law and Harvard Law School and is a member of the American Academy of the Arts and Sciences. He did his undergraduate work at the University of Texas at Austin and completed his Ph.D. in political science at Yale University. His most recent books include Speak Freely: Why Universities Must Defend Free Speech and Repugnant Laws: Judicial Review of Acts of Congress from the Founding to the Present. He is currently completing two books, Constitutional Crises, Real and Imagined and The Idea of Democracy in America, from the American Revolution to the Gilded Age. More information can be found at https://scholar.princeton.edu/kewhitt.