Keywords: Indians of Mexico ; Mixtec Indians Social conditions ; Immigrants ; Transnationalism ; Agricultural laborers, Foreign Social conditions ; Foreign workers, Mexican Social conditions ; Marginality, Social ; Marginality, Social ; Mixtec Indians Social conditions ; Mixtec Indians Migrations ; Mixtec Indians Employment ; Migration, Internal Social aspects ; Migrant agricultural laborers Social conditions ; Ethnische Gruppe ; Indigenes Volk ; Mixteken ; Transnationalisierung ; Internationale Migration ; Ausgrenzung ; Staatsbürger ; Bürgerrecht ; Politische Beteiligung ; Kulturelle Identität ; Mexico Emigration and immigration ; Social aspects ; United States Emigration and immigration ; Social aspects ; Mexiko