RATIFICATION OF COMPACT.

SEC. 4. RATIFICATION OF COMPACT. (a) Ratification.— (1) In general.—As modified by this Act, the Compact is authorized, ratified, and confirmed. (2) Amendments.—Any amendment to the Compact is authorized, ratified, and confirmed, to the extent that such an amendment— (A) is executed to ensure that the Compact is consistent with this Act; or (B)(i) is approved by the Secretary; (ii) concerns nonmonetary matters; and (iii) does not affect the water rights of the Tribes determined in the Compact, or any other property held in trust by the United States on behalf of the Tribes or allottees. (3) Modifications.—Nothing in this Act— (A) precludes the Secretary from approving a modification to the Compact, including an appendix or exhibit to the Compact, that is consistent with this Act; or (B) authorizes amendments or modifications that otherwise require congressional approval under— (i) section 2116 of the Revised Statutes (25 U.S.C. 177); or (ii) any other applicable Federal law. (b) Execution.—To the extent that the Compact does not conflict with this Act, the Secretary shall execute the Compact, including all exhibits to, appendices to, and parts of the Compact requiring the signature of the Secretary. (c) Environmental Compliance.— (1) In general.—In implementing the Compact and this Act, the Secretary and the Tribes shall ensure compliance 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.); and (C) all other applicable environmental laws (including regulations). (2) Performance of compliance activities.—The Secretary and the Tribes shall perform appropriate Federal environmental compliance activities relating to any activity undertaken by the Secretary or Tribes pursuant to this Act prior to commencement of that activity. (3) Effect of execution.— (A) In general.—The execution of the Compact by the Secretary under this section shall not constitute a major Federal action for purposes of the National Environmental Policy Act of 1969 (42 U.S.C. 4321 et seq.). (B) Compliance.—The Secretary shall ensure compliance with all Federal laws and regulations necessary to implement the Compact and this Act. (d) Public Availability.—As provided in articles IV.I.b (relating to hearings), IV.I.c (relating to the employment of a water engineer), and IV.I.7.e (relating to Board records) of the Compact, and in recognition of section 9 of article II of the Montana State Constitution, all records of the Flathead Reservation Water Management Board and the Water Engineer employed by the Board shall be open to public inspection.