ampaign and was appointed as his Postmaster General, serving from 1953 to 1961. [1, 2, 3]Lawrence O’Brien: Played an organizational leadership role in the 1960 and 1964 Kennedy and Johnson presidential campaigns. He served as Postmaster General under President Lyndon B. Johnson from 1965 to 1968. [1, 2]Since the Post Office Department was reorganized into the independent U.S. Postal Service in 1971, the Postmaster General is appointed by a Board of Governors rather than the president, officially ending the era of presidential campaign managers running the agency. You can track current leadership and board members via the USPS Board Beloud