U.S. Citizenship and Immigration Services (USCIS) runs criminal background checks on U.S. petitioners in such cases, to find out whether the FBI, sex offender registries, or a related agency have a record of any crimes.
Does USCIS do background check on sponsor?
As part of the process of reviewing a family or marriage green card application, U.S. Citizenship and Immigration Services (USCIS) conducts background and security checks on both the U.S. citizen sponsor and the spouse seeking a green card.
What kind of background check does USCIS do?
At the screening, an officer will collect your biometric information like your photograph, fingerprints, and signature. USCIS uses this biometric information to run a criminal background check on you in the FBI's database.