status (unless they live outside Canada with non-Canadian family members) while Mexican citizens require a TN visa. Spouse and dependent children of a TN professional can be admitted into the United States in the TD status. U and T visas The U-1 visa is a nonimmigrant visa which is set aside for victims of crimes (and their immediate family members) who have suffered substantial mental or physical abuse and are willing to assist law enforcement and government officials in the investigation or prosecution of the criminal activity. Subtypes of this visa are U-2 issued to spouses of U-1, U-3 issued to children of U-1, U-4 issued to parents of U-1 under the age of 21 and U-5 issued to unmarried siblings under the age of 18 of U-1 who is under 21. The T-1 visa is issued to victims of severe forms of human trafficking. Holders may adjust their status to permanent resident status. Subtypes of this visa are T-2 (issued to spouses of T-1), T-3 (issued to children of T-1), T-4 (issued to parents of T-1 under the age of 21), and T-5 (issued to unmarried siblings under the age of 18 of T-1 who is under 21). V visa The V visa is a temporary visa available to spouses and minor children (unmarried, under 21) of U.S. lawful permanent residents (LPR, also known as green card holders). It allows permanent residents to achieve family unity with their spouses and children while the immigration process takes its course. It was created by the Legal Immigration Family Equity Act of 2000. The Act is to relieve those who applied for immigrant visas on or before December 21, 2000. Practically, the V visa is currently not available to spouses and minor children of LPRs who have applied after December 21, 2000. List of US visa types All US visa types and subtypes are listed below: Immigrant visas The Trump administration issued new rules on August 12, 2019, that will reject applicants for temporary or permanent visas for failing to meet income standards or for receiving public assistance such as welfare, food stamps, public housing or Medicaid. Critics feared the new law, which was set to go into effect in October 2019, could negatively impact the lives of children who are U.S. citizens. Nonimmigrant visas Dual-intent visas The concept of the dual intent visa is to grant legal status to certain types