How does United States postal service work?

The Structure of the Postal Service is discussed extensively in the book "Postal Service Labor Arbitrations" by John Zodrow in Denver. Basically, the Postmaster General (PMG) is the chief executive officer and is named by, and serves at the pleasure of, the USPS Board of Governors, as does the deputy PMG. The Board of Governors oversee the Post Office, now known as the Postal Service. Nine of the 11 Governors of the Board are appointed by the President of the United States, plus the PMG and Deputy PMG. Rate changes, however, are overseen by the Postal Rate Commission, an independent federal agency.