under this Act. Such subpoenas shall be issued by agreement between the Chairperson and Vice Chairperson of the Commission, or by the vote of a majority of the members of 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 testimony, produce evidence, or both, relating to the matter under investigation. The application may be made within the judicial district where the hearing is conducted or where that person is found, resides, or transacts business. Any failure to obey the order of the court may be punished by the court as civil contempt. (3) Service of subpoenas The subpoenas of the Commission shall be served in the manner provided for subpoenas issued by a United States district court under the Federal Rules of Civil Procedure for the United States district courts. (4) Service of process All process of any court to which application is made under paragraph (2) may be served in the judicial district in which the person required to be served resides or may be found. (e) Immunity Except as provided in this subsection, a person may not be excused from testifying or from producing evidence pursuant to a subpoena on the ground that the testimony or evidence required by the subpoena may tend to incriminate or subject that person to criminal prosecution. A person, after having claimed the privilege against self-incrimination, may not be criminally prosecuted by reason of any transaction, matter, or thing which that person is compelled to testify about or produce evidence relating to, except that the person may be prosecuted for perjury committed during the testimony or made in the evidence. (f) Contract authority To the extent or in the amounts