Richard E. Ellis is Professor of History at the University of Buffalo, SUNY. Among his published works are The Jeffersonian Crisis: Courts and Politics in the Young Republic (1971) and The Union at Risk: Jacksonian Democracy, State's Rights, and the Nullification Crisis (1987). He has held grants from The John Simon Guggenheim Foundation, the National Endowment for the Humanities, and the American Council of Learned Societies.