; and (2) the alien’s presence in the United States is required by the Government with respect to such assistance. (j) Effective date The amendments made by this section shall take effect on the date of the enactment of this Act and shall apply to acts that occur before, on, or after the date of the enactment of this Act. 9. Border Security Funding (a) Funding In addition to amounts otherwise made available by this Act or any other provision of law, there is hereby appropriated to the U.S. Customs and Border Protection—Procurement, Construction, and Improvements account, out of any amounts in the Treasury not otherwise appropriated, $23,400,000,000, to be available as described in subsections (b) and (c), of which— (1) $16,625,000,000 shall be for a border wall system along the southern border of the United States, including physical barriers and associated detection technology, roads, and lighting; and (2) $6,775,000,000 shall be for infrastructure, assets, operations, and technology to enhance border security along the southern border of the United States, including— (A) border security technology, including surveillance technology, at and between ports of entry; (B) new roads and improvements to existing roads; (C) U.S. Border Patrol facilities and ports of entry; (D) aircraft, aircraft-based sensors and associated technology, vessels, spare parts, and equipment to maintain such assets; (E) a biometric entry and exit system; and (F) family residential centers. (b) Availability of border wall system funds (1) In general Of the amount appropriated in subsection (a)(1)— (A) $5,510,244,000 shall become available October 1, 2018; (B) $1,715,000,000 shall become available October 1, 2019; (C) $2,140,000,000 shall become available October 1, 2020; (D) $1,735,000,000 shall become available October 1, 2021; (E) $1,746,000,000 shall become available October 1, 2022; (F) $1,776,000,000 shall become available October 1, 2023