2 U.S.C. § 6613
Advances to Sergeant at Arms of Senate for extraordinary expenses
The Secretary of the Senate on and after July 31, 1958 , is authorized, in his discretion, to advance to the Sergeant at Arms of the Senate such sums as may be necessary, not exceeding $4,000, to meet any extraordinary expenses of the Senate.
( Pub. L. 85–570 , July 31, 1958 , 72 Stat. 442 ; Pub. L. 94–440, title I, § 108 , Oct. 1, 1976 , 90 Stat. 1445 ; Pub. L. 95–26, title I, § 104 , May 4, 1977 , 91 Stat. 82 .)