Title: Opening and closing the doors
Subjects: Alien labor, Emigration and immigration law, Illegal aliens, Legal status, laws, Émigration et immigration, Recht, Travailleurs étrangers, Einwanderung, Droit, Foreign workers, Immigrants clandestins, Rechtspolitik, Trabajadores extranjeros, Aliens, Noncitizens, Illegal immigration, Undocumented Immigrants, Migrationspolitik, USA
Places: United States