Professor, Arizona State University, School of Earth and Space Exploration in Phoenix, AZ

Astronomer at McDonald Observatory, University of Texas at Austin

Member of the Board at Harvard Belfer Center for Science and International Affairs

Astronomy at McDonald Observatory, University of Texas at Austin

Professor of Affordable Housing and Urban Policy at UC Berkeley

Director, Racial Justice Program at American Civil Liberties Union (ACLU)

Associate Professor of Political Science at Boston University

Vice Provost for Graduate Studies and Dean of the Graduate Division at UC Berkeley

Professor Emeritus at UC Berkeley

Faculty Affiliate at U.S. Immigration Policy Center, UCSD

Assistant Professor of Political Science at Carleton College