Effective October 1, 1996, the responsibility for maintenance of security systems for the Capitol buildings and grounds is transferred from the Architect of the Capitol to the Capitol Police Board. Such maintenance shall be carried out under the direction of the Committee on House Oversight of the House of Representatives and the Committee on Rules and Administration of the Senate. On and after October 1, 1996, any alteration to a structural, mechanical, or architectural feature of the Capitol buildings and grounds that is required for security system maintenance under the preceding sentence may be carried out only with the approval of the Architect of the Capitol.