Description: The former Penn-University of Guadalajara project relocated to Princeton. "Since its inception, the MMP's main focus has been to gather social as well as economic information on Mexican-US migration. The data collected has been compiled in a comprehensive database that is available to the public free of charge for research and educational purposes through this web-site. The MMP is a unique source of data that enables researchers to track patterns and processes of contemporary Mexican immigration to the United States. The project is a multi-disciplinary research effort that generates public use data on the characteristics and behavior of Mexican migrants."