"The US Postal Service has two investigative units: the USPS OIG and the USPIS12. The USPS OIG conducts independent audits and investigations of USPS programs and operations to determine whether they are efficient and cost-effective1. The USPIS is a federal law enforcement agency that investigates crimes involving the mail system, such as mail theft, robberies, assaults, mail fraud, and drug trafficking."
And like all other government agencies, they've failed, and likely wasted billions in tax dollars.
USPS has gone downhill in their service. I’m starting to believe that there really is NO SANTA CLAUSE!