28 U.S.C. § 672 : US Code - Section 672: Marshal

      (a) The Supreme Court may appoint a marshal, who shall be subject
    to removal by the Court, and may fix his compensation.
      (b) The marshal may, with the approval of the Chief Justice of
    the United States, appoint and fix the compensation of necessary
    assistants and other employees to attend the Court, and necessary
    custodial employees.
      (c) The marshal shall:
        (1) Attend the Court at its sessions;
        (2) Serve and execute all process and orders issued by the
      Court or a member thereof;
        (3) Take charge of all property of the United States used by
      the Court or its members;
        (4) Disburse funds appropriated for work upon the Supreme Court
      building and grounds under the jurisdiction of the Architect of
      the Capitol upon certified vouchers submitted by the Architect;
        (5) Disburse funds appropriated for the purchase of books,
      pamphlets, periodicals and other publications, and for their
      repair, binding, and rebinding, upon vouchers certified by the
      librarian of the Court;
        (6) Pay the salaries of the Chief Justice, associate justices,
      and all officers and employees of the Court and disburse other
      funds appropriated for disbursement, under the direction of the
      Chief Justice;
        (7) Pay the expenses of printing briefs and travel expenses of
      attorneys in behalf of persons whose motions to appear in forma
      pauperis in the Supreme Court have been approved and when counsel
      have been appointed by the Supreme Court, upon vouchers certified
      by the clerk of the Court;
        (8) Oversee the Supreme Court Police.