"T nonimmigrant status is a temporary immigration benefit that enables certain victims of a severe form of human trafficking to remain in the United States for up to 4 years if they have assisted law enforcement in an investigation or prosecution of human trafficking. T nonimmigrant status is also available for 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)". (USCIS.gov)