The U nonimmigrant status (U visa) is set aside for victims of certain crimes who have suffered mental or physical abuse and are helpful to law enforcement or government officials in the investigation or prosecution of criminal activity.
A foreign national may be eligible for a U nonimmigrant visa if:
Victims of Human Trafficking: T Nonimmigrant Status
T nonimmigrant status is a temporary immigration benefit that enables certain foreign nationals who have been victims of a severe form of trafficking in persons to remain in the United States for an initial period of up to 4 years if they have complied with any reasonable request for assistance from law enforcement in the detection, investigation, or prosecution of human trafficking or qualify for an exemption or exception. T nonimmigrant status is also available to certain qualifying family members of trafficking victims. T nonimmigrants are eligible for employment authorization and certain federal and state benefits and services. T nonimmigrants who qualify may also be able to adjust their status and become lawful permanent residents (obtain a Green Card).