; and (ii) the State, in consultation with the Secretary, determines that a proposed expenditure of the principal amount is necessary to satisfy mitigation or watershed improvement obligations under the Compact. (4) Authorization of appropriations There is authorized to be appropriated to the Secretary to carry out this subsection $5,000,000 for each of fiscal years 2021 through 2023. (h) Nonreimbursability of costs All amounts incurred by the Secretary under this section shall be nonreimbursable. 13. Miscellaneous provisions (a) Waiver of sovereign immunity by the United States Except as provided in subsections (a) through (c) of section 208 of the Department of Justice Appropriation Act, 1953 ( 43 U.S.C. 666 ), nothing in this Act waives the sovereign immunity of the United States. (b) Other tribes not adversely affected Nothing in this Act quantifies or diminishes any land or water right, or any claim or entitlement to land or water, of an Indian Tribe, band, or community other than the Fort Belknap Indian Community. (c) Elimination of debts or liens against allotments of the Fort Belknap Indian Community members The Secretary shall cancel and eliminate all debts or liens against the allotments of land held by the Fort Belknap Indian Community and the members of the Fort Belknap Indian Community due to construction assessments, annual operation and maintenance charges, and any other charge that may have been levied relating to an irrigation project of the Secretary for the Fort Belknap Indian Community. (d) Effect on current law Nothing in this Act affects any provision of law (including regulations) in effect on the day before the date of enactment of this Act with respect to pre-enforcement review of any Federal environmental enforcement action. (e) Effect on reclamation laws The activities carried out by the Commissioner under this Act shall not establish a precedent or impact the authority provided under any other provision of the reclamation laws, including— (1) the Reclamation Rural Water Supply Act of