U.S. Citizenship and Immigration Services (USCIS) is an agency of the United States Department of Homeland Security (DHS) that administers the country's naturalization and immigration system. It is a successor to the Immigration and Naturalization Service (INS), which was dissolved by the Homeland Security Act of 2002 and replaced by three components within the DHS: USCIS, Immigration and Customs Enforcement (ICE), and Customs and Border Protection (CBP).