Upcoming Audit Work

This audit is a follow-up from a December 16, 2022 OIG report, Delivery Operations – Undelivered and Partially Delivered Routes. The previous audit examined how the Postal Service managed routes with undelivered or partially delivered mail. It found that although electronic systems and reports track delayed mail on delivery routes, they do not specify how many routes were left undelivered or only partially delivered. The current audit will evaluate the effectiveness of enhancements made by the U.S. Postal Service to address these deficiencies, including how undelivered and partially delivered routes are identified and reported, and how customers will be notified.

The Origin-Destination Information System – Revenue, Pieces, and Weight (ODIS-RPW) is the probability sampling system used to assist in estimating Postal Service revenue, volume flow, and weight. The Postal Service uses this information to develop proposals for new Postal Service rates, assist in budget preparation, conduct management studies, and support management decisions concerning mail flow and service performance in transportation and operations. Our objective is to determine whether the Postal Service conducted ODIS-RPW statistical tests in accordance with established policies and procedures. The scope of our audit is fiscal year 2023 Q1 through 2026 Q2.

The U.S. Postal Service delivers over 110 billion mail pieces each year, and these mailings should include Postal Service authorized stamps (or other postage) to verify payment. However, counterfeit stamps—enabled by advanced printing technologies and proliferating online marketplaces—pose a growing threat to Postal Service revenues, operations, and customers. The Postal Service and U.S. Postal Inspection Service (USPIS) engage in prevention, education, and enforcement efforts to mitigate this growing threat, and they reported seizing counterfeit stamps worth $16 million in fiscal year 2025. This audit will evaluate the Postal Service and USPIS’s efforts to address counterfeit stamps. 

The Postal Service faces persistent difficulties in both meeting its service performance targets and achieving financial sustainability. These challenges stem from a complex mix of internal and external factors. The internal environment is marked by ongoing network restructuring, aging infrastructure and equipment, labor issues, and struggles with organizational culture and management effectiveness. Externally, it must contend with declining mail volume, a surge in e-commerce and package volumes, regulatory constraints, and policy changes.

Our audit will evaluate the operational and financial performance of selected postal districts, specifically examining how operational culture impacts key performance indicators.

The U.S. Postal Service is responsible for processing, transporting, and delivering the nation’s Election and Political Mail. Election Mail is any mailpiece that an authorized election official creates for voters participating in the election process and includes ballots and voter registration materials. Political Mail is any mailpiece created by a registered political candidate, a campaign committee, or a committee of a political party for political campaign purposes. The U.S. Postal Service has specific policies and procedures on the proper acceptance, processing, delivery, and recording of Election and Political Mail. Our objective is to evaluate the U.S. Postal Service’s readiness for timely processing and delivery of Election and Political Mail for the 2026 mid-term election.