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. Congress created the U nonimmigrant visa with the passage of the Victims of Trafficking and Violence Protection Act (including the Battered Immigrant Women’s Protection Act) in October 2000. The legislation was intended to strengthen the ability of law enforcement agencies to investigate and prosecute cases of domestic violence, sexual assault, trafficking of aliens and other crimes, while also protecting victims of crimes who have suffered substantial mental or physical abuse due to the crime and are willing to help law enforcement authorities in the investigation or prosecution of the criminal activity. The legislation also helps law enforcement agencies to better serve victims of crimes. http://immigrationlegalblog.com