The Immigration and Nationality Act (INA), codified at Title 8, U.S.C., Aliens and Nationality, §§ 1101-1178, is the primary legislation pertaining to immigration law in the United States. Although originally signed into law in 1952, the act has been amended several times since its original passage. Other Titles, including Title 18, Crimes and Criminal Procedure, and Title 22, Foreign Relations, include provisions relevant to immigration law.