The Postal Clause was added to the Constitution primarily to facilitate interstate communication, as well to create a source of revenue for the early United States. The Clause has been construed to give Congress the enumerated power to designate mail routes and construct or designate post offices, with the implied authority to carry, deliver, and regulate the mails of the United States as a whole. Clearly the Postal Service has the power to close the Douglas post office, but this is not the right decision.
