Epstein and Yoo: Judge Walker's Prop 8 Ruling Was Hastybr The Hoover Institution - Hoover Institutionbr Richard Epstein is a professor of law at the New York University law school, a senior fellow at the Hoover Institution, and a senior lecturer at the University of Chicago law school. His latest book is The Case Against the Employee Free Choice Act. John Yoo is a professor at the University of California at Berkeley law school. His most recent book is Crisis and Command.Two of the nation’s leading constitutional scholars discuss contemporary constitutional issues -- and the Supreme Court that will decide them. Is Obamacare unconstitutional? Epstein and Yoo explain why the “encroachment” argument beats the “general welfare” argument in the case against Obamacare.