; (B) affect the legality or validity of any determination by the Secretary under this Act; or (C) affect any consultation requirement under any other law. (g) Authority To acquire leaseholds Notwithstanding any other provision of law, if the Secretary determines that the acquisition of a leasehold interest in real property and the construction or modification of any facility on such leased property are necessary to facilitate the implementation of this Act, the Secretary may— (1) acquire such leasehold interest; and (2) construct or modify such facility. (h) Authorization of appropriations There is authorized to be appropriated to carry out this section, for each of the fiscal years 2018 through 2023, $1,000,000,000, of which $5,000,000 shall be used for grants authorized under subsection (d). (i) Offset, rescission of unobligated Federal funds (1) In general There is hereby rescinded, from appropriated discretionary funds that remain available for obligation on the date of the enactment of this Act (other than the unobligated funds referred to in paragraph (4)), amounts determined by the Director of the Office of Management and Budget that are equal, in the aggregate, to the amount authorized to be appropriated under subsection (h). (2) Implementation The Director of the Office of Management and Budget shall determine and identify— (A) the appropriation accounts from which the rescission under paragraph (1) shall apply; and (B) the amount of the rescission that shall be applied to each such account. (3) Report Not later than 60 days after the date of the enactment of this Act, the Director of the Office of Management and Budget shall submit to Congress and to the Secretary of the Treasury a report that describes the accounts and amounts determined and identified under paragraph (2) for rescission under paragraph (1). (4) Exceptions This subsection shall not apply to unobligated funds of— (A) the Department of Defense; (B) the Department of Veterans Affairs