William G. Howell
https://harris.uchicago.edu/directory/william-howell
William G. Howell has written widely on separation-of-powers issues and American political institutions, especially the presidency. He currently is working on research projects on Obama's education initiatives, distributive politics and the normative foundations of executive power.
Howell is the author, most recently, of Relic: How Our Constitution Undermines Effective Government—and Why We Need a More Powerful Presidency (2016). He is also the co-author of The Wartime President: Executive Influence and the Nationalizing Politics of Threat (2013), and Thinking about the Presidency: The Primacy of Power (2013). He also is the co-author of While Dangers Gather: Congressional Checks on Presidential War Powers (2007); author of Power without Persuasion: The Politics of Direct Presidential Action (2003); co-author of The Education Gap: Vouchers and Urban Schools (2002); co-author of an introductory American politics textbook series; and editor of additional volumes on the presidency and school boards. His research also has appeared in numerous professional journals and edited volumes.