; Sergeant at Arms and Doorkeeper of the Senate, $7,500; Secretary for the Majority of the Senate, $7,500; Secretary for the Minority of the Senate, $7,500; in all, $30,000. Contingent Expenses of the Senate INQUIRIES AND INVESTIGATIONS For expenses of inquiries and investigations ordered by the Senate, or conducted under paragraph 1 of rule XXVI of the Standing Rules of the Senate, section 112 of the Supplemental Appropriations and Rescission Act, 1980 ( Public Law 96–304 ), and Senate Resolution 281, 96th Congress, agreed to March 11, 1980, $174,000,000, of which $17,400,000 shall remain available until September 30, 2026. U.S. SENATE CAUCUS ON INTERNATIONAL NARCOTICS CONTROL For expenses of the United States Senate Caucus on International Narcotics Control, $582,000. SECRETARY OF THE SENATE For expenses of the Office of the Secretary of the Senate, $17,494,000, of which $12,994,000 shall remain available until September 30, 2028, and of which $4,500,000 shall remain available until expended: Provided , That of the amounts made available under this heading, $112,000 shall be available for the requirements associated with Public Law 117–326 . SERGEANT AT ARMS AND DOORKEEPER OF THE SENATE For expenses of the Office of the Sergeant at Arms and Doorkeeper of the Senate, $194,942,000, of which $185,442,000 shall remain available until September 30, 2028: Provided , That of the amounts made available under this heading, $5,000,000, to remain available until expended, shall be for Senate hearing room audiovisual equipment; $2,500,000, to remain available until expended, shall be for a residential security system program