The Postal Service Clause is one of Congress’ enumerated powers found in the Constitution of the United States, Article. I. Section. 8., clause 7:

(Clause 7 – Post Office)

[The Congress shall have Power] To establish Post Offices and post Roads;

photo credit: CarbonNYC

From the U.S. Senate web site:

The postal powers embrace all measures necessary to establish the system and to insure the safe and speedy transit and prompt delivery of the mails. Congress may also punish those who use the mails for unlawful purposes.

More

• Clause 7. Postal Power – from Findlaw
• Clause 7. Postal Power – from Cornell’s Legal Information Institute
• United States Postal Service (USPS)
• United States Postal Inspection Service
• FakeChecks.org
• Postal Regulatory Commission
• United States Postal Service – from Wikipedia
• American Catalog Mailers Association (ACMA)
• The National Association of Presort Mailers (NAPM)
• Direct Marketing Association (DMA)

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