of the Senate and the minority leader of the House of Representatives. (B) Pay Each member of the Oversight Panel shall each be paid at a rate equal to the daily equivalent of the annual rate of basic pay for level I of the Executive Schedule for each day (including travel time) during which such member is engaged in the actual performance of duties vested in the Commission. (C) Prohibition of compensation of Federal employees Members of the Oversight Panel who are full-time officers or employees of the United States or Members of Congress may not receive additional pay, allowances, or benefits by reason of their service on the Oversight Panel. (D) Travel expenses Each member shall receive travel expenses, including per diem in lieu of subsistence, in accordance with applicable provisions under subchapter I of chapter 57 of title 5, United States Code. (E) Quorum Four members of the Oversight Panel shall constitute a quorum but a lesser number may hold hearings. (F) Vacancies A vacancy on the Oversight Panel shall be filled in the manner in which the original appointment was made. (G) Meetings The Oversight Panel shall meet at the call of the Chairperson or a majority of its members. (4) Staff (A) In general The Oversight Panel may appoint and fix the pay of any personnel as the Oversight Panel considers appropriate. (B) Experts and consultants The Oversight Panel may procure temporary and intermittent services under section 3109(b) of title 5, United States Code. (C) Staff of agencies Upon request of the Oversight Panel, the head of any Federal department or agency may detail, on a reimbursable basis, any of the personnel of that department or agency to the Oversight Panel to assist it in carrying out its duties under this section. (5) Powers (A) Hearings and sessions The Oversight Panel may, for the purpose of carrying out this section, hold hearings, sit and act at times and places, take testimony, and receive evidence as the Panel considers appropriate and may administer oaths or affirmations to witnesses