28 U.S.C. § 1825 - U.S. Code - Unannotated Title 28. Judiciary and Judicial Procedure § 1825. Payment of fees

(a) In any case in which the United States or an officer or agency of the United States is a party, the Attorney General shall pay all fees of witnesses on the certificate of the United States attorney or assistant United States attorney, and in the proceedings before a United States magistrate judge, on the certificate of such magistrate judge, except that any fees of defense witnesses, other than experts, appearing pursuant to subpoenas issued upon approval of the court, shall be paid by the Attorney General--

(b) In proceedings in forma pauperis for a writ of habeas corpus, and in proceedings in forma pauperis under section 2255 of this title, the Attorney General shall pay, on the certificate of the district judge, all fees of witnesses for the party authorized to proceed in forma pauperis, except that any fees of witnesses for such party, other than experts, appearing pursuant to subpoenas issued upon approval of the court, shall be paid by the Attorney General--

(c) Fees and mileage need not be tendered to a witness upon service of a subpoena issued on behalf of the United States or an officer or agency of the United States, upon service of a subpoena issued on behalf of a defendant represented by a Federal public defender, assistant Federal public defender, or other attorney appointed pursuant to section 3006A of title 18, or upon service of a subpoena issued on behalf of a party authorized to proceed in forma pauperis, if the payment of such fees and mileage is to be made by the Attorney General under this section.