For those wishing to gain United States citizenship for family members in other parts of the world, it would be beneficial to perform a DNA test. An U.S. citizen wishing to sponsor his/her family member from another country for immigration into the U.S. must prove a biological relationship with that particular individual. In many instances, only those with a confirmed relationship found from DNA testing will have their applications approved, gaining immigration status into the U.S. Click here to view a list of all specimen collection locations in the United States.