public hearings, sit and act at times and places, take testimony, and receive evidence as the Commission considers appropriate. The Commission may administer oaths or affirmations to witnesses appearing before it. A hearing or any portion of it may be closed to the public by a majority vote of the Commission. (b) Powers of Members and agents Any member or agent of the Commission may, if authorized by the Commission, take any action which the Commission is authorized to take by this section. (c) Assistance from Federal agencies (1) General services administration The Administrator of General Services shall provide to the Commission on a reimbursable basis administrative support and other services for the performance of the Commission’s functions. (2) Other departments and agencies In addition to the assistance prescribed in paragraph (1), departments and agencies of the United States may provide to the Commission such services, funds, facilities, staff, and other support services as they may determine advisable and as may be authorized by law. (d) Gifts The Commission may accept, use, and dispose of gifts or donations of services or property. (e) Postal services The Commission may use the United States mails in the same manner and under the same conditions as departments and agencies of the United States. (f) Subpoena Power (1) In general The Commission may issue subpoenas, in a case in which the majority of its members vote for the issuance of such a subpoena, requiring the attendance and testimony of witnesses and the production of any evidence relating to any matter under investigation by the Commission. The attendance of witnesses and the production of evidence may be required from any place within the United States at any designated place of hearing within the United States. (2) Failure to obey a Subpoena If a person refuses to obey a subpoena issued under paragraph (1), the Commission may apply to a United States district court for an order requiring that person to appear before the Commission to give