 He's the author of a number of books, his most recent of which is After Trump, Reconstructing the Presidency. And prior to that, a book on Jimmy Hoffa entitled In Hoffa's Shadow, A Stepfather, A Disappearance in Detroit, and My Search for the Truth. He teaches and writes about presidential power, national security law, federal courts, conflict of laws, international law, and internet law. A lot of areas of law.