William Howell has written widely on separation of powers issues, with a particular focus on the American Presidency. The author, most recently, of Presidents, Populism, and the Crisis of Democracy (University of Chicago Press, 2020), William is the Sydney Stein Professor of American Politics at the Harris School of Public Policy, the Chair of the Department of Political Science, the Director of the Center for Effective Government, and co-host of Not Another Politics Podcast.