Jeffrey S. Passel is a senior demographer at the Urban Institute. He previously served as principal research associate at the Urban Institute’s Labor, Human Services, and Population Center. His expertise is immigration to the United States and the demography of racial and ethnic groups, and he has authored numerous studies on immigrant populations in America, undocumented immigration, the economic and fiscal impact of the foreign born, and the impact of welfare reform on immigrant populations. He holds a Ph.D. in social relations from Johns Hopkins University.

Fernando Riosmena is an assistant professor in the Geography Department and the Population Program of the Institute of Behavioral Science at the University of Colorado, Boulder. His research investigates how demographic processes are associated with the spatial and social mobility, well-being, and development in Latin American societies and with immigrant communities in the United States from those societies. His main research areas are immigrant health throughout different stages of the migration process and the role of U.S. immigration policy and social, economic, and environmental conditions in sending communities on the dynamics of migration between Latin America and the United States. He holds a Ph.D. in demography from the University of Pennsylvania.

Silvia Elena Giorguli Saucedo is director of the Center for Demographic, Urban, and Environmental Studies at El Colegio de Mexico. She has also taught at El Colegio de Mexico, the Universidad Nacional Autonoma de Mexico, and the Instituto Tecnologico Autonomo de Mexico. Her research focuses on adolescents and family structure, international migration, and the impact of population change in Mexico. She holds a Ph.D. in sociology from Brown University.



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