Dr. Williams is Director of the Center for Latin American Studies and Professor of Political Science at the University of Florida. Williams received his M.Phil in Latin American Studies and D.Phil in Politics from the University of Oxford in 1986. 

In addition to Living ‘Illegal’: The Human Face of Unauthorized Immigration, he is author of The Catholic Church and Politics in Nicaragua and Costa Rica (Macmillan 1989), Militarization and Demilitarization in El Salvador's Transition to Democracy (University of Pittsburgh 1997), and co-editor of Christianity, Globalization, and Social Change in the Americas (Rutgers University 2001) and A Place to Be: Brazilian, Guatemalan, and Mexican Immigrants in Florida’s New Destinations (Rutgers University Press, 2009). 

Williams has received a number of prestigious fellowships and grants from Fulbright, North-South Center, United States Institute of Peace, Pew Charitable Trusts, the Rockefeller Foundation, and the Ford Foundation.