Jamal Greene is the Dwight Professor of Law at Columbia Law School, where he teaches constitutional law, comparative constitutional law, the law of the political process, First Amendment, and federal courts. His scholarship focuses on the structure of legal and constitutional argument. Professor Greene is the author of numerous articles and book chapters and is a frequent media commentator on constitutional law and the Supreme Court. Prior to joining Columbia's faculty he was an Alexander Fellow at New York University Law School. Professor Greene served as a law clerk to the Hon. Guido Calabresi on the U.S. Court of Appeals for the Second Circuit and for the Hon. John Paul Stevens on the U.S. Supreme Court. He earned his J.D. from Yale Law School and his A.B. from Harvard College.