Randy E. Barnett is the Carmack Waterhouse Professor of Legal Theory at the Georgetown University Law Center, where he directs the Georgetown Center for the Constitution and teaches constitutional law and contracts. He has been a visiting professor at Harvard Law School, the University of Pennsylvania, and Northwestern. In 2008, he was awarded a Guggenheim Fellowship in Constitutional Studies. His publications include more than one hundred articles and reviews, as well as ten books. After graduating from Northwestern University and Harvard Law School, he tried many felony cases as a prosecutor in the Cook County States' Attorney's Office in Chicago. In 2004, he argued the medical marijuana case of Gonzalez v. Raich before the U.S. Supreme Court. In 2011-12 he represented the National Federation of Independent Business in its constitutional challenge to the Affordable Care Act.