David E. Lewis is William R. Kenan, Jr. Professor and Chair of the Department of Political Science at Vanderbilt University. He received his Ph.D. in Political Science at Stanford University. His research interests include the presidency, executive branch politics, and public administration. He is the author of two books, Presidents and the Politics of Agency Design and The Politics of Presidential Appointments: Political Control and Bureaucratic Performance. Before joining Vanderbilt’s Department of Political Science, he was assistant professor of politics and public affairs at Princeton University, where he was affiliated with the Center for the Study of Democratic Politics.