Taught law at the University of Texas, 1967-69; the University of Michigan, 1970-82; and, as a visiting professor, at Stanford, 1969-70; the University of California (Berkeley), 1978-79; and William and Mary, 1991. Joined the Columbia faculty in 1983. Massee Professor of Law at the University of Virginia since 1998. Publications include Press Subpoenas: An Empirical and Legal Analysis (1972); "The Checking Value in First Amendment Theory" (1977); "The Pathological Perspective and the First Amendment"; "The First Amendment and the Ideal of Civic Courage" (1988); editor of The Burger Court: The Counter-Revolution that Wasn't (1983); Law and Liberalism in the 1980s (1991); "Milton's Areopagitica and the Modern First Amendment" (1996); "Free Speech and Good Character" (1999); and "School Vouchers and Religious Liberty" (2002).
