<Tr> <Th> Website </Th> <Td> www.INS.gov </Td> </Tr> <P> The United States Immigration and Naturalization Service (INS) was an agency of the U.S. Department of Labor from 1933 to 1940 and the U.S. Department of Justice from 1940 to 2003 . </P> <P> 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 . </P> <P> Prior to 1933, there were separate offices administering immigration and naturalization matters, known as the Bureau of Immigration and the Bureau of Naturalization, respectively . The INS was established on June 10, 1933, merging these previously separate areas of administration . In 1890, the federal government, rather than the individual states, regulated immigration into the United States, and the Immigration Act of 1891 established a Commissioner of Immigration in the Treasury Department . Reflecting changing governmental concerns, immigration was transferred to the purview of the United States Department of Commerce and Labor after 1903 and the Department of Labor after 1913 . In 1940, with increasing concern about national security, immigration and naturalization was organized under the authority of the Department of Justice . </P>

After 9-11 customs was moved from the treasury department. where is it located now