@Debra Law,
Under law, the Postal Service must break even over time.
It is not set-up to make a profit and if it happens to end up with a surplus, that
surplus is supposed to be used to pay for the next years cost of doing business.
A board of 11 governors, nine of which are appointed by the president, and approved by the Senate, runs the USPS. These members then decide on their 10th member, the postmaster general or CEO. Then these 10 select the deputy master general, or chief operating officer.
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The USPS has laws guaranteeing its monopoly on non-urgent first class mail (18 U.S.C. 1725). That's why FedEx cannot put anything in your mailbox. The USPS also enjoys sovereign immunity as well as the powers of eminent domain. The U.S. Postal Inspection Service is one of the oldest law enforcement agencies in the nation, with the ability to enforce over 200 federal laws, including search and seizure.