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U.S. Citizenship and Immigration Services

On March 1, 2003, U.S. Citizenship and Immigration Services (USCIS) officially assumed responsibility for the immigration service functions of the federal government. The USCIS was formed to enhance the security and improve the efficiency of national immigration services by exclusively focusing on the administration of benefit applications. Immigration and Customs Enforcement (ICE) and Customs and Border Protection (CBP), components within DHS, handle immigration enforcement and border security functions.[​portal/​site/​uscis/​]

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