Application Support Centers
USCIS Offices fingerprint applicants for immigration benefits. Some USCIS applications, such as the Application for Naturalization or the Application to Register Permanent Residence or Adjust Status, require the USCIS to conduct a FBI fingerprint background check on the applicant. Most applicants that require a background check will be scheduled to appear at a specific Application Support Center (ASC) or Designated Law Enforcement Agency (DLEA) for fingerprinting.
Source: U.S. Citizenship and Immigration Services