; or (ii) by a majority of such members present at a meeting when a quorum is present. (2) Issuance and enforcement of subpoenas (A) Issuance A subpoena issued under paragraph (1) shall— (i) bear the signature of the Chairperson of the Commission; and (ii) be served by any person or class of persons designated by the Chairperson for that purpose. (B) Enforcement In the case of contumacy or failure to obey a subpoena issued under paragraph (1), the United States district court for the district in which the subpoenaed person resides, is served, or may be found may issue an order requiring the person to appear at any designated place to testify or to produce documentary or other evidence. (C) Noncompliance Any failure to obey the order of the court may be punished by the court as a contempt of court. (3) Witness allowances and fees (A) In general Section 1821 of title 28, United States Code, shall apply to a witness requested or subpoenaed to appear at a hearing of the Commission. (B) Expenses The per diem and mileage allowances for a witness shall be paid from funds available to pay the expenses of the Commission. (4) Postal services The Commission may use the United States mails in the same manner and under the same conditions as other agencies of the Federal Government. (5) Gifts The Commission may accept, use, and dispose of gifts or donations of services or property. (d) Administrative Provisions (1) Staff (A) Director There shall be a full-time staff director for the Commission who shall— (i) serve as the administrative head of the Commission; and (ii) be appointed by the Chairperson with the concurrence of the Vice Chairperson. (B) Other personnel The Commission may— (i) appoint such other personnel as it considers advisable, subject to the provisions of title 5, United States Code, governing appointments in the competitive service, and the provisions of chapter 51 and subchapter III of chapter 53 of that title relating to classification and General Schedule pay rates