2 U.S.C. § 6622

(a) Regulations issued by Committee on Rules and Administration Subject to such regulations as may hereafter be issued by the Committee on Rules and Administration of the Senate, the Sergeant at Arms shall have the authority, with respect to telephone equipment and services provided to any user on a reimbursable basis (including repair or replacement), solely for the purposes of this section, to make such certification as may be necessary to establish such services and equipment as official, issue invoices in conjunction therewith, and receive payment for such services and equipment by certification, voucher, or otherwise. (b) Equipment and services provided on reimbursable basis For purposes of sections 6621 to 6623 of this title, telephone equipment and services provided to any user for which payment, prior to October 1, 1987 , was not authorized from the contingent fund of the Senate shall, on and after October 1, 1987 , be considered telephone equipment and services provided on a reimbursable basis for which payment may be obtained from such fund in accordance with subsection (a) of this section. (c) Establishment of reasonable charges Subject to the approval of the Committee on Rules and Administration, the Sergeant at Arms may establish reasonable charges for telephone equipment and services provided to any user which may be in addition to that regularly authorized by the Committee. (d) Disposition of moneys received All moneys, derived from payments for telephone equipment and services provided from funds from the Appropriation Account within the contingent fund of the Senate for “Contingent Expenses, Sergeant at Arms and Doorkeeper of the Senate” under the line item for Telecommunications (including receipts from carriers and others for loss or damage to such services or equipment for which repair or replacement has been provided by the Sergeant at Arms), and all other moneys received by the Sergeant at Arms as charges or commissions for telephone services, shall be deposited in and made a part of such Appropriation Account and under such line item, and shall be available for expenditure or obligation, or both, in like manner and subject to the same limitations as any other moneys in such account and under such line item. (e) Committee authority to classify or reclassify equipment and services Nothing in sections 6621 to 6623 of this title shall be construed as limiting or otherwise affecting the authority of the Committee on Rules and Administration of the Senate to classify or reclassify telephone equipment and services provided to any user as equipment or services for which reimbursement may or may not be required.