That's not your problem. You do have an obligation to report a crime, especially when you can clearly see there are victims.
I do know that at least before the ***** administration, there were waivers given to some immigrants in the country illegally who had been victimized while here.
U.S. law provides protections for legal and undocumented immigrants who have been crime victims: domestic violence, certain crimes, and human trafficking.
www.dhs.gov
Immigration Options for Victims of Crimes
Many immigrants are fearful of admitting that they have been a victim of a crime in part because they believe they will be removed (deported) from the United States if they report the crime. U.S. law provides several protections for legal and undocumented immigrants who have been victims of a crime. There are specific protections for victims of domestic violence, victims of certain crimes, and
victims of human trafficking.