; and of which not less than $5,310,547,000 shall be for enforcement, detention, and removal operations, including transportation of unaccompanied alien minors: Provided, That not to exceed $11,475 shall be for official reception and representation expenses: Provided further, That not to exceed $10,000,000 shall be available until expended for conducting special operations under section 3131 of the Customs Enforcement Act of 1986 ( 19 U.S.C. 2081 ): Provided further, That not to exceed $2,000,000 shall be for awards of compensation to informants, to be accounted for solely under the certificate of the Secretary of Homeland Security: Provided further, That not to exceed $11,216,000 shall be available to fund or reimburse other Federal agencies for the costs associated with the care, maintenance, and repatriation of smuggled aliens unlawfully present in the United States: Provided further , That not less than $2,000,000 shall be for entering into new agreements for the delegation of law enforcement authority authorized under section 287(g) of the Immigration and Nationality Act: Provided further , That funding made available under this heading shall maintain a level of not less than 41,500 detention beds through September 30, 2024. PROCUREMENT, CONSTRUCTION, AND IMPROVEMENTS For necessary expenses of U.S. Immigration and Customs Enforcement for procurement, construction, and improvements, $50,520,000, of which $35,420,000 shall remain available until September 30, 2026, and of which $15,100,000 shall remain available until September 30, 2028. Transportation security administration OPERATIONS AND SUPPORT For necessary expenses of the Transportation Security Administration for operations and support, $10,118,131,000, of which $600,000,000 shall remain available until September 30, 2025: Provided, That not to exceed $7,650 shall be for official reception and representation expenses: Provided further, That security service fees authorized under section 44940 of title 49, United States Code, shall be credited to this