Philip Hamburger is the Maurice and Hilda Friedman Professor of Law at Columbia Law School. His scholarship focuses on constitutional law and its history and his publications include Separation of Church and State (Harvard 2002); “Religious Liberty in Philadelphia,” Emory Law Journal (2005); “The New Censorship:  Institutional Review Boards,” Supreme Court Review (2004); “More is Less,” Virginia Law Review (2004); “Law and Judicial Duty,” George Washington Law Review (2003); “Liberality,” Texas Law Review (2002); “Revolution and Judicial Review:  Chief Justice Holt’s Opinion in City of London v. Wood,” Columbia Law Review (1994).