Luis Eduardo Guarnizo is Professor of Sociology and Community and Regional Development at the Department of Human Ecology, University of California, Davis. His research examines the determinants, dynamics, and theoretical and practical effects of mass human mobility across national borders. His research specifically focuses on migrants’ mode of socioeconomic incorporation and political participation, migration and citizenship, and migration and socioeconomic change and inequality at the local, national, transnational, and global scales. He has studied these processes among Latin American migrants (i.e., Colombian, Dominican, Mexican, and Salvadoran) in the United States and the European Union. His work combines quantitative (survey and official aggregate data) and qualitative (ethnography and participant observation) research methods in multiple sites (i.e., places of origin and destination). His work has been published in the American Journal of Sociology, American Sociological Review, International Migration Review, The Annals of the American Academy of Political and Social Science, Journal of Economic and Social Geography, and Ethnic and Racial Studies, among others.