; and $2,000,000, to remain available until expended, shall be for a joint audible warning system. MISCELLANEOUS ITEMS For miscellaneous items, $26,517,000 which shall remain available until September 30, 2026. SENATORS' OFFICIAL PERSONNEL AND OFFICE EXPENSE ACCOUNT For Senators' Official Personnel and Office Expense Account, $534,510,000, of which $49,169,000 shall remain available until September 30, 2026, and of which $7,000,000 shall be allocated solely for the purpose of providing financial compensation to Senate interns. OFFICIAL MAIL COSTS For expenses necessary for official mail costs of the Senate, $300,000. Administrative Provisions REQUIRING AMOUNTS REMAINING IN SENATORS' OFFICIAL PERSONNEL AND OFFICE EXPENSE ACCOUNT TO BE USED FOR DEFICIT REDUCTION OR TO REDUCE THE FEDERAL DEBT 101. Notwithstanding any other provision of law, any amounts appropriated under this Act under the heading SENATE — Contingent Expenses of the Senate — senators’ official personnel and office expense account shall be available for obligation only during the fiscal year or fiscal years for which such amounts are made available. Any unexpended balances under such allowances remaining after the end of the period of availability shall be returned to the Treasury in accordance with the undesignated paragraph under the center heading GENERAL PROVISION under chapter XI of the Third Supplemental Appropriation Act, 1957 ( 2 U.S.C. 4107 ) and used for deficit reduction (or, if there is no Federal budget deficit after all such payments have been made, for reducing the Federal debt, in such manner as the Secretary of the Treasury considers appropriate). SENATE NATIONAL SECURITY WORKING GROUP 102. (a) In general Section 21 of Senate Resolution 64 (113th Congress), agreed to March 5, 2013, is amended by striking subsection (d). (b) Effective date The amendment made by subsection (a) shall take effect as though enacted on December 31, 2022. NUMBER OF CONSULTANTS 103. Section 101(a) of the Supplemental Appropriations Act, 1977 ( 2 U.S.C.