Spring 2026 Semiannual Report to Congress
The Office of Inspector General is tasked with ensuring efficiency, accountability, and integrity in the U.S. Postal Service and its regulator, the Postal Regulatory Commission (PRC). We also have the distinct mission of helping to maintain confidence in the mail and postal system, as well as to improve USPS's bottom line. We use audits and investigations to help protect the integrity of the Postal Service and the PRC. Our Semiannual Report to Congress presents a snapshot of the work we did to fulfill our mission for the six-month period ending March 31, 2026. Our dynamic report format provides readers with easy access to facts and information, as well as succinct summaries of the work by area. Links are provided to the full reports featured in this report, as well as to the appendices.
A Message from the Inspector General
Over the past six months, concern over the Postal Service’s financial condition and its ability to provide timely mail delivery has intensified. In this Semiannual Report to Congress, we highlight work from the past six months that is most directly connected to these issues — postal finances and service performance.
Our work has increased transparency into postal finances in many ways. We’ve issued a report exploring the Postal Service’s financial history and released a public-facing dashboard that makes it easy for anyone to see postal financial and productivity information and trends. We have uncovered potential lost revenue from unused and excess space, as well as significant revenue loss from financial fraud. Our work around service performance continues to cover both national and local service issues, including how the rollout of the Postal Service’s network is affecting timely mail delivery.
This report also covers other important investigative work. Our efforts to deter mail theft have become increasingly important, as organized crime has threatened the safety of financial instruments sent by mail. Our investigative teams also help combat the devastating national opioid crisis and drug overdose deaths plaguing America.
I am very proud to lead this lean and efficient organization that is dedicated to rooting out fraud, waste, and abuse. Our organization leverages 21st century data-driven analysis and technologies to manage our daily operations and maximize our oversight capabilities, allowing us to provide superior oversight benefitting the American public.
Over the last six months alone, OIG investigations returned over $91 million in fines, recoveries, and restitution, including more than $13 million directly to the Postal Service. We issued 38 reports, made 433 arrests, and completed 1,179 investigations. We delivered these results even with the complexity of our offices being closed during the October-November government shutdown, where a limited number of excepted staff continued investigative operations to protect life and property.
Tammy L. Hull
Inspector General, United States Postal Service