Office of the Citizenship & Immigration Services Ombudsman (CISOMB) Virtual Ombudsman System, March 19, 2010. The Office of the Citizenship & Immigration Services Ombudsman (CISOMB or Ombudsman) at the Department of Homeland Security (DHS), as mandated by the Homeland Security Act of 2002 § 452, is an independent office that reports directly to the Deputy Secretary of Homeland Security. The CISOMB: (1) assists individuals and employers with resolving problems with USCIS; (2) identifies areas in which individuals and employers have problems in dealing with USCIS; and (3) proposes changes to mitigate those problems. CISOMB has developed the Virtual Ombudsman System (VOS) to ensure the efficient and secure processing of information to aid the Ombudsman in assisting individuals and employers and making systemic recommendations to USCIS. CISOMB is conducting this privacy impact assessment (PIA) because these transactions require collection of personally identifiable information (PII).