Jamal Green is the Dwight Professor of Law at Columbia Law School, where he teaches constitutional law, law of the political process, First Amendment, and federal courts. Prior to his current role, 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 is the author of numerous articles and book chapters and is a frequent media commentator on constitutional law and the Supreme Court.