Mark Tushnet is the William Nelson Cromwell Professor of Law at Harvard Law School and the author of numerous works in constitutional theory and constitutional history, including The NAACP's Legal Strategy against Segregated Education, 1925-50; Making Civil Rights Law: Thurgood Marshall and the Supreme Court, 1936-61; Making Constitutional Law: Thurgood Marshall and the Supreme Court, 1961-91; and A Court Divided: The Rehnquist Court and the Future of Constitutional Law.