((a)) The Director of the Administrative Office of the United States Courts shall pay each justice or judge of the United States, and each retired justice or judge recalled or designated and assigned to active duty, while attending court or transacting official business at a place other than his official duty station for any continuous period of less than thirty calendar days (1) all necessary transportation expenses certified by the justice or judge; and (2) payments for subsistence expenses at rates or in amounts which the Director establishes, in accordance with regulations which the Director shall prescribe with the approval of the Judicial Conference of the United States and after considering the rates or amounts set by the Administrator of General Services and the President pursuant to . The Director of the Administrative Office of the United States Courts shall also pay each justice or judge of the United States, and each retired justice or judge recalled or designated and assigned to active duty, while attending court or transacting official business under an assignment authorized under chapter 13 of this title which exceeds in duration a continuous period of thirty calendar days, all necessary transportation expenses and actual and necessary expenses of subsistence actually incurred, notwithstanding the provisions of , in accordance with regulations which the Director shall prescribe with the approval of the Judicial Conference of the United States.
((b)) The official duty station of the Chief Justice of the United States, the Justices of the Supreme Court of the United States, and the judges of the United States Court of Appeals for the District of Columbia Circuit, the United States Court of Appeals for the Federal Circuit, and the United States District Court for the District of Columbia shall be the District of Columbia.
((c)) The official duty station of the judges of the United States Court of International Trade shall be New York City.
((d)) The official duty station of each district judge shall be that place where a district court holds regular sessions at or near which the judge performs a substantial portion of his judicial work, which is nearest the place where he maintains his actual abode in which he customarily lives.
((e)) The official duty station of a circuit judge shall be that place where a circuit or district court holds regular sessions at or near which the judge performs a substantial portion of his judicial work, or that place where the Director provides chambers to the judge where he performs a substantial portion of his judicial work, which is nearest the place where he maintains his actual abode in which he customarily lives.
((f)) The official duty station of a retired judge shall be established in accordance with .
((g)) Each circuit or district judge whose official duty station is not fixed expressly by this section shall notify the Director of the Administrative Office of the United States Courts in writing of his actual abode and official duty station upon his appointment and from time to time thereafter as his official duty station may change.