U.S. Citizenship and Immigration Services (USCIS)
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U.S. Citizenship and Immigration Services (USCIS)

The government agency that oversees lawful immigration to the U.S. In 2003, USCIS officially assumed responsibility for the immigration service functions of the federal government. The Homeland Security Act of 2002 dismantled the former Immigration and Naturalization Service (INS) and separated the former agency into three components within the Department of Homeland Security:

  • USCIS provides immigrant services.
  • Immigration and Customs Enforcement handles immigration enforcement.
  • Customs and Border Protection is responsible for border security functions.
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