Prof. Steven G. Calabresi is the Clayton J. & Henry R. Barber Professor of Law at Northwestern Pritzker School of Law. He is also a Visiting Professor of Law at Yale Law School, Fall 2013-2022; a Visiting Professor of Political Theory at Brown University for 2016-2017; and the Co-Founder and Co-Chairman of the Federalist Society's Board of Directors. Professor Calabresi worked in the West Wing of President Ronald Reagan's White House; was a Special Assistant for Attorney General Edwin Meese III; and he clerked for Justice Antonin Scalia on the Supreme Court and for Judges Robert H. Bork and Ralph K. Winter on the federal courts of appeals. Prof. Calabresi has written over seventy law review articles and essays. He is the author of The History and Growth of Judicial Review: Volume I The G-20 Common Law Countries and Volume II The G-20 Civil Law Countries. Professor Calabresi is also a co-author on two books: The U.S. Constitution: Creation, Reconstruction, the Progressives, and the Modern Era; and The Unitary Executive: Presidential Power from Washington to Bush. Professor Calabresi has taught: Constitutional Law I; Comparative Constitutional Law, Federal Jurisdiction, Administrative Law, State Constitutional Law, and the Separation of Powers.