; and (B) amounts may be made available to implement this subsection with respect to the Senate without advance notice to the Committee on Appropriations of the House of Representatives. . (b) Effective date The amendments made by this section shall apply with respect to fiscal year 2024 and each succeeding fiscal year. SECURITY OF OFFICE SPACE RENTED BY SENATORS 104. Section 3 of the Legislative Branch Appropriations Act, 1975 ( 2 U.S.C. 6317 ) is amended— (1) in subsection (b)— (A) by redesignating paragraphs (1) through (12) as subparagraphs (A) through (L), respectively; (B) by striking The aggregate and inserting (1) Subject to paragraph (2), the aggregate ; and (C) by adding at the end the following: (2) The aggregate square feet of an office space for purposes of paragraph (1) shall not include any portion of the office space used for security or safety enhancements that are— (A) of a kind authorized by the Committee on Rules and Administration of the Senate, which shall include an information technology security closet and a secure lobby or reception area; and (B) approved by the Sergeant at Arms and Doorkeeper of the Senate. ; and (2) in subsection (c)(1)— (A) by striking The maximum and inserting (A) Subject to subparagraph (B), the maximum ; and (B) by adding at the end the following: (B) The portion of the cost of a rental described in subparagraph (A) that is attributable to building security and safety measures shall not be included in determining the annual rate paid for the rental for purposes of subparagraph (A) if— (i) the costs are for building security and safety measures— (I) of a kind authorized by the Committee on Rules and Administration of the Senate, which shall include guard services, access control, and facility monitoring; and (II) approved by the Sergeant at Arms and Doorkeeper of the Senate