This controlled vocabulary originally categorized the topical pages.

Immigration and Naturalization Service (INS)

The Immigration and Naturalization Service (INS) was the Department of Justice agency which, prior to 2003, handled legal and illegal immigration and naturalization. The INS was abolished in 2003 and its functions placed under three agencies – the United States Citizenship and Immigration Services (USCIS), Immigration and Customs Enforcement (ICE) and Customs and Border Patrol (CBP).


Immunity from Prosecution

The Fifth Amendment of the United States Constitution prohibits the government from forcing witnesses to give self-incriminating testimony in criminal cases. Courts may evade this prohibition and force reluctant witnesses to testify by granting them immunity from prosecution. Once witnesses cannot be prosecuted for their testimony, courts may punish them if they refuse to testify.


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