Keith E. Whittington is William Nelson Cromwell Professor of Politics at Princeton University and currently director of graduate studies in the Department of Politics. He is the author of Constitutional Construction: Divided Powers and Constitutional Meaning, and Constitutional Interpretation: Textual Meaning, Original Intent, and Judicial Review, and Political Foundations of Judicial Supremacy: The Presidency, the Supreme Court, and Constitutional Leadership in U.S. History (which won the C. Herman Pritchett Award for best book in law and courts and the J. David Greenstone Award for best book in politics and history), and Judicial Review and Constitutional Politics, and American Political Thought: Readings and Materials. He is the editor (with Neal Devins) of Congress and the Constitution and editor (with R. Daniel Kelemen and Gregory A. Caldeira) of The Oxford Handbook of Law and Politics and editor of Law and Politics: Critical Concepts in Political Science. He is also the author (with Howard Gillman and Mark A. Graber) of American Constitutionalism, vol. 1: Structures of Government and American Constitutionalism, vol. 2: Rights and Liberties (which together won the Teaching and Mentoring Award for innovative instructional materials in law and courts), and American Constitutionalism: Powers, Rights and Liberties (a one-volume abridgement). He has published widely on American constitutional theory and development, federalism, judicial politics, and the presidency. He has been a John M. Olin Foundation Faculty Fellow and American Council of Learned Societies Junior Faculty Fellow, and a Visiting Scholar at the Social Philosophy and Policy Center, and a Visiting Professor at the University of Texas School of Law. He is a member of the American Academy of the Arts and Sciences. He is editor (with Gerald Leonard) of the New Essays on American Constitutional History and editor (with Maeva Marcus, Melvin Urofsky, and Mark Tushnet) of the Cambridge Studies on the American Constitution. He is completing Repugnant Laws: Judicial Review of Acts of Congress from the Founding to the Present.