The Immigration and Naturalization Service was the chief Federal agency for immigration matters. It was in existence from 1933 to 2003. Its functions are now handled by Immigration and Customs Enforcement (ICE)
History of the Immigration and Naturalization Service : a report
"...prepared at the request of Senator Edward M. Kennedy, chairman, Committee on the Judiciary, United States Senate, for the use of the Select Commission on Immigration and Refugee Policy ; prepared by the Congressional Research Service, Library of Congress, Ninety-sixth Congress, second session" (1980).