Referred to by some as '' ' former INS ' '' and by others as '' ' legacy INS ' '' , the agency ceased to exist under that name on March 1 , 2003 , when most of its functions were transferred to three new entities – U.S. Citizenship and Immigration Services ( USCIS ) , U.S. Immigration and Customs Enforcement ( ICE ) , and U.S. Customs and Border Protection ( CBP ) – within the newly created Department of Homeland Security , as part of a major government reorganization following the September 11 attacks of 2001
September 11 attacks
September 11 attacks
Immigration and Naturalization Service