T visa:

T visa status was created for victims of severe forms of human trafficking who are physically present in the U.S. and who can assist in the investigation or prosecution of traffickers as material witnesses.

The application for T visa status requires an endorsement by a law enforcement agency investigating the trafficker(s). Nearly all grounds of inadmissibility may be waived, and individuals in T visa status may adjust to permanent residence after three years.

A total of 5,000 T visas may be granted per fiscal year, and 5,000 adjustments may be granted per year for individuals in T visa status.