Cass R. Sunstein is the Robert Walmsley University Professor at Harvard and the founder and director of the Program on Behavioral Economics and Public Policy at Harvard Law School. He is the author of hundreds of articles and dozens of books, including Impeachment: A Citizen’s Guide, Nudge (with Richard Thaler), Law and Leviathan (with Adrian Vermeule), How to Interpret the Constitution, On Freedom, and Can It Happen Here? Authoritarianism in America. He is a recipient of the Holberg Prize, sometimes described as the equivalent of the Nobel Prize for the humanities and social sciences. Adrian Vermeule is Ralph S. Tyler, Jr., Professor of Constitutional Law at Harvard Law School. His many books include Law’s Abnegation: From Law’s Empire to the Administrative State (Harvard) and The Constitution of Risk.