((a)) The Commission may appoint, without reference to chapter 51 of title 5, an executive director. The Chairman may appoint such other employees as may be necessary to carry out the purposes of this chapter.

((b)) Members of the Commission shall be allowed travel expenses (including per diem allowance in lieu of subsistence) in the same amount and to the same extent as persons serving intermittently in the Government service are allowed travel expenses under , United States Code.