Postal Inspection Service and Office of Inspector General
Within United States Postal Service

Mission statement: "The USPS OIG achieves its mission of helping maintain confidence in the postal system and improving the Postal Service´s bottom line through independent audits and investigations. Audits of postal programs and operations help to determine whether the programs and operations are efficient and cost-effective. Investigations help prevent and detect fraud, waste, and misconduct and have a deterrent effect on postal crimes. "