25 U.S.C. § 3712
The Secretary shall conduct all land management activities on Indian agricultural land in accordance with goals and objectives set forth in the approved agricultural resource management plan, in an integrated resource management plan, and in accordance with all tribal laws and ordinances, except in specific instances where such compliance would be contrary to the trust responsibility of the United States.
Unless otherwise prohibited by Federal law, the Secretary shall comply with tribal laws and ordinances pertaining to Indian agricultural lands, including laws regulating the environment and historic or cultural preservation, and laws or ordinances adopted by the tribal government to regulate land use or other activities under tribal jurisdiction. The Secretary shall-
In any case in which a regulation or administrative policy of the Department of the Interior conflicts with the objectives of the agricultural resource management plan provided for in section 3711 of this title, or with a tribal law, the Secretary may waive the application of such regulation or administrative policy unless such waiver would constitute a violation of a Federal statute or judicial decision or would conflict with his general trust responsibility under Federal law.
This section does not constitute a waiver of the sovereign immunity of the United States, nor does it authorize tribal justice systems to review actions of the Secretary.
25 U.S.C. § 3712