Am. Wild Horse Campaign v. Raby
Summary: In reviewing consolidated challenges to the Bureau of Land Management's 2022 amendments to its Regional Management Plan for wild horse herds in Wyoming's checkerboard region, this court holds that the agency's decision to convert two Herd Management Areas to Herd Areas with population goals of zero contravenes the Administrative Procedure Act. The BLM erroneously argued that the "thriving natural ecological balance" standard of Section 3 of the Wild Horse Act does not apply to resource management plan amendments, but such determinations constitute management decisions to which the statutory standard necessarily attaches. Because the agency candidly admitted it made no finding regarding ecological balance, the decision failed to consider an essential aspect of the problem and was not based on the relevant statutory factors. The petitioners' remaining claims under the National Environmental Policy Act fail, as the agency did not predetermine its outcome, reasonably explained the infeasibility of land swaps, and properly deferred analysis of potential increased grazing impacts to future site-specific decisions. Similarly, the FLPMA challenge lacks merit because the record demonstrates the agency considered multiple-use values and did not commit undue degradation by altering the balance of land uses. Accordingly, the judgment of the district court is reversed and the matter remanded for application of the Allied-Signal factors to determine the appropriate remedy.