Office of Superintendent of Immigration created and placed in the Treasury Department.
Office of Superintendent of Immigration upgraded to Bureau of Immigration.
Bureau of Immigration transferred to the newly created Department of Commerce and Labor.
Federal Naturalization Service created and Bureau of Immigration became the Bureau of Immigration and Naturalization.
Bureau of Immigration and Naturalization divided into separate Bureaus – the Bureau of Immigration and the Bureau of Naturalization – and placed in the new Department of Labor.
U.S. Border Patrol created within the Bureau of Immigration.
The Bureau of Immigration and the Bureau of Naturalization reunited into a single agency, the Immigration and Naturalization Service (INS).
The Immigration and Naturalization Service (INS) transferred from the Department of Labor to the Department of Justice.
The INS was abolished and its functions placed under three agencies – U.S. Citizenship and Immigration Services (USCIS), Immigration and Customs Enforcement (ICE), and Customs and Border Patrol (CBP) – within the newly created Department of Homeland Security.