Keith E. Whittington is the William Nelson Cromwell Professor of Politics at Princeton University and a visiting fellow at the Hoover Institution. His work on American constitutional law, theory and politics, federalism, judicial politics, and the presidency has been published widely in books, scholarly journals, and elsewhere. He is a fellow in the American Academy of Arts and Sciences, and winner of the J. David Greenstone Award and the C. Herman Pritchett Award, among other honors. He served on the Presidential Commission on the Supreme Court of the United States, and he is the founding chair of the Academic Freedom Alliance.