Ratification of Agreement

(a) Ratification (1) In general Except as modified by this Act, and to the extent that the Agreement does not conflict with this Act, the Agreement is authorized, ratified, and confirmed. (2) Amendments If an amendment to the Agreement, or any attachment to the Agreement requiring the signature of the Secretary, is executed in accordance with this Act to make the Agreement consistent with this Act, the amendment is authorized, ratified, and confirmed. (b) Execution (1) In general To the extent that the Agreement does not conflict with this Act, the Secretary shall execute the Agreement, including all attachments to, or parts of, the Agreement requiring the signature of the Secretary. (2) Modifications Nothing in this Act prohibits the Secretary, after execution of the Agreement, from approving any modification to the Agreement, including an attachment to the Agreement, that is consistent with this Act, to the extent that the modification does not otherwise require congressional approval under section 2116 of the Revised Statutes (25 U.S.C. 177) or any other applicable provision of Federal law. (c) Environmental compliance (1) In general In implementing the Agreement and this Act, the Secretary shall comply with— (A) the Endangered Species Act of 1973 (16 U.S.C. 1531 et seq.); (B) the National Environmental Policy Act of 1969 (42 U.S.C. 4321 et seq.), including the implementing regulations of that Act; and (C) all other applicable Federal environmental laws and regulations. (2) Compliance (A) In general In implementing the Agreement and this Act, the Navajo Nation shall prepare any necessary environmental documents, consistent with— (i) the Endangered Species Act of 1973 (16 U.S.C. 1531 et seq.); (ii) the National Environmental Policy Act of 1969 (42 U.S.C. 4321 et seq.), including the implementing regulations of that Act; and (iii) all other applicable Federal environmental laws and regulations. (B) Authorizations The Secretary shall— (i) independently evaluate the documentation required under subparagraph (A); and (ii) be responsible for the accuracy, scope, and contents of that documentation. (3) Effect of execution The execution of the Agreement by the Secretary under this section shall not constitute a major Federal action under the National Environmental Policy Act of 1969 (42 U.S.C. 4321 et seq.). (4) Costs Any costs associated with the performance of the compliance activities under this subsection shall be paid from funds deposited in the Navajo Trust Fund or other sources of funding from the Navajo Nation, subject to the condition that any costs associated with the performance of Federal approval or other review of such compliance work or costs associated with inherently Federal functions shall remain the responsibility of the Secretary.