United States Postal Service (USPS) special agents reportedly discovered large amounts of undelivered mail after raiding the home of a mail carrier who aligns with the far-right conspiracy theory QAnon.A total of eight large garbage bags—believed to be filled with undelivered mail—were confiscated f...
Yup, they have the United States Postal Inspection Service, or USPIS
They operate out of a United States Postal Inspection Service Station, or US PISS.