Academic Employment:
Visiting Assistant Professor of History, University of Minnesota, Minneapolis, 1979-1980
Assistant Professor of History, University of Texas at Austin, 1980-1982
Assistant Professor of History, University of California, San Diego, 1982-1984
Associate Professor, UCSD, 1984-89
Professor, UCSD, 1989--;
Chair, 2000--
Associate Director, Center for U.S.-Mexican Studies, University of California, San Diego,
1997-2001.