Professor of Sociology at Princeton University. He has written 250 articles and chapters on national development, international migration, Latin American and Caribbean urbanisation and economic sociology. He has published multiple books, including City on the Edge – the Transformation of Miami (California 1993), co-authored with Alex Stepick and winner of the Robert Park Award for best book in urban sociology and the Anthony Leeds Award for best book in urban anthropology in 1995; Immigrant America: A Portrait, 3rd edition, (California 2006) was designated a Centennial Publication by the University of California Press in 1996.