The nonimmigrant status, often referred to as the “T visa” is a form of immigration status for certain noncitizen survivors of trafficking. This visa was created by Congress to help combat human trafficking and provide immigration relief to persons who were affected. As part of the protections given, Congress allowed for applicants to petition for certain family members to gain status. These family members are known as “derivatives.” For many family members, being a derivative on an application may be the only way they will be able to get legal status in the United States. This practice advisory provides information on derivatives for T nonimmigrant status as well as considerations to keep in mind when filing an application.