From USPS News Link:
USPS manages approximately $29 billion in postal contracts, including agreements with vendors that provide the Postal Service with information technology services, cleaning supplies and more.
Given the sheer volume and value of these deals, fraud can happen. Common schemes include false claims and statements, such as failing to provide goods and services according to the contract terms, or inflating costs above what’s specified in the contract.
Improprieties are investigated by the USPS Office of Inspector General (OIG), an independent agency that audits Postal Service programs and operations.
If you suspect contract fraud, visit the OIG site to file a complaint online or call the agency’s hotline at 888-877-7644. You can submit anonymous tips.
Read more: USPS News Link Story – On alert.