39 U.S. Code § 205 - Procedures of the Board of Governors
Procedures of the Board of Governors
(c) The Board shall act upon majority vote of those members who are present, and any 6 members present shall constitute a quorum for the transaction of business by the Board, except—
that in the appointment or removal of the Postmaster General, and in setting the compensation of the Postmaster General and Deputy Postmaster General, a favorable vote of an absolute majority of the Governors in office shall be required;
that in the appointment or removal of the Deputy Postmaster General, a favorable vote of an absolute majority of the Governors in office and the member serving as Postmaster General shall be required; and
No officer or employee of the United States may serve concurrently as a Governor. A Governor may hold any other office or employment not inconsistent or in conflict with his duties, responsibilities, and powers as an officer of the Government of the United States in the Postal Service.