International Society for the Protection of Mustangs and Burros, et al. v. United States Department of Agriculture, et al.

CourtDistrict Court, D. Arizona
DecidedJuly 8, 2026
Docket3:26-cv-08092
StatusUnknown

This text of International Society for the Protection of Mustangs and Burros, et al. v. United States Department of Agriculture, et al. (International Society for the Protection of Mustangs and Burros, et al. v. United States Department of Agriculture, et al.) is published on Counsel Stack Legal Research, covering District Court, D. Arizona primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
International Society for the Protection of Mustangs and Burros, et al. v. United States Department of Agriculture, et al., (D. Ariz. 2026).

Opinion

1 WO 2 3 4 5 6 IN THE UNITED STATES DISTRICT COURT 7 FOR THE DISTRICT OF ARIZONA

9 International Society for the Protection of No. CV-26-08092-PCT-KML Mustangs and Burros, et al., 10 ORDER Plaintiffs, 11 v. 12 United States Department of Agriculture, et 13 al.,

14 Defendants. 15 16 After years of administrative proceedings, the United States Forest Service 17 (“USFS”) approved plans for the management of free-roaming horses in the Apache- 18 Sitgreaves National Forests. (Doc. 1.) Not even three months later, USFS issued a notice 19 claiming none of those horses qualified as protected by a federal statute and all of them 20 could be removed. The International Society for the Protection of Mustangs and Burros 21 (“ISPMB”) and ISPMB member Betty Nixon filed a lawsuit and motion for a temporary 22 restraining order to prevent any roundup. (Doc. 2 at 3.) The parties stipulated USFS would 23 not round up horses until July 15, 2026. (Doc. 19 at 2.) Plaintiffs now move for a 24 preliminary injunction that would primarily prevent any roundup while this litigation is 25 pending. (Doc. 23-3 at 2.) A preliminary injunction is granted. 26 I. Factual Background 27 The Wild Free-Roaming Horses and Burros Act of 1971 (“WHA”) protects “wild 28 free-roaming horses and burros” from “capture, branding, harassment, or death.” 16 U.S.C. 1 § 1331. The WHA led to the establishment of the Heber Wild Horse Territory (“Heber 2 Territory”) in Arizona’s Apache-Sitgreaves National Forests as “a range for the protection 3 and preservation of wild horses.” (Doc. 1 at 5.) The horses now at issue are found in the 4 Heber Territory. 5 The statute defines “wild free-roaming horses and burros” as “all unbranded and 6 unclaimed horses and burros on public lands of the United States.” 16 U.S.C. § 1332(a). 7 The relevant regulation, however, defines wild-free roaming horses and burros slightly 8 differently, as “all unbranded and unclaimed horses and burros and their progeny that have 9 used lands of the National Forest System on or after December 15, 1971.” 36 U.S.C. 10 § 222.60(13). Crucially, the regulatory definition excludes all horses or burros “introduced 11 onto the National Forest System on or after December 15, 1971, by accident, negligence, 12 or willful disregard of private ownership.”1 Id. 13 In 2005, ISPMB sued USFS to prevent USFS’s plan to capture and sell around 120 14 horses from the Apache-Sitgreaves National Forests “without conducting a census, 15 inventory, or environmental analysis.” (Doc. 1 at 6.) The court granted a preliminary 16 injunction preventing roundups. (Doc. 1 at 6.) In 2007, the parties came to a stipulated 17 settlement agreement, which the court approved. (Doc. 1-1 at 11.) The stipulation required 18 USFS to, among other things: 19 a. Develop a territory management plan (“TMP”) that complies with the 20 National Environmental Policy Act (“NEPA”), with public involvement, 21 before gathering or removing horses in the Heber Territory; 22 b. Involve the public “in scoping for this analysis”2; 23 c. Consider the ISPMB’s comments on the TMP; and 24 d. Coordinate with the White Mountain Apache Tribe to repair and maintain 25 the boundary fence, which had been damaged. (Doc. 1-1.) 26 1 Though plaintiffs assert the statute does not require a genetic lineage from 1971, they do 27 not contest the applicability of this regulation. (Doc. 33 at 10.) 2 In this context, “scoping” likely referred to the process of “determining the scope of issues 28 to be addressed and for identifying the significant issues related to a proposed action.” Nat’l Wildlife Fed’n v. Cosgriffe, 21 F. Supp. 2d 1211, 1216 n.3 (D. Or. 1998) (simplified). 1 In January 2020, USFS published a proposal “initiating the scoping period” for a 2 TMP. (Doc. 1 at 7.) In response, ISPMB submitted detailed comments and raised multiple 3 concerns, including USFS’s failure to notify the public about this proposal in violation of 4 the 2007 Stipulation, reliance on incomplete data about the horses’ population, and plan to 5 provide only an Environmental Assessment (“EA”) rather than a more-complete 6 Environmental Impact Statement (“EIS”) (Doc. 1 at 7-8). See Anderson v. Evans, 371 F.3d 7 475, 488 (9th Cir. 2004) (under NEPA, agencies may prepare a shorter EA before deciding 8 whether there is no significant impact on the environment or whether an EIS is required). 9 Nixon also submitted comments on the proposal. (Doc. 1 at 8.) When USFS published the 10 draft plan and accompanying EA, ISPMB again submitted similar comments and pointed 11 out USFS’s deviation from a relevant handbook. (Doc. 1 at 8-9.) Nixon also again 12 submitted comments and objections. (Doc. 1 at 9.) In the summer of 2025, USFS published 13 the final TMP and EA. (Doc. 1 at 9.) Both plaintiffs submitted formal objections to those 14 documents, many of which were consistent with their previous comments. (Doc. 1 at 9- 15 10.) 16 On January 29, 2026, USFS gave final approval to the TMP and EA. (Doc. 1 at 10.) 17 It found the plan would have no significant impact on the environment and therefore did 18 not require an EIS. (Docs. 1 at 10; 23 at 2, 5.) The TMP establishes an appropriate 19 population management level (“AML”) of 50-104 horses and authorizes population 20 management actions to maintain that upper limit. (Doc. 1 at 10.) 21 The parties do not disclose what, if anything, occurred between January and April 22 2026, but on April 9 and 10, USFS issued a letter (Doc. 2-1 at 2-3) and subsequent notice 23 (Doc. 2-1 at 5) declaring all of the horses in the Apache-Sitgreaves National Forests to be 24 “unauthorized livestock” instead of wild free-roaming horses protected by the WHA. 25 (Docs. 2-1 at 5; 1 at 10; 2 at 2.) USFS warned that as “unauthorized livestock,” the horses 26 could be “impounded without further notice” on or after April 27, 2026. (Doc. 2-1 at 5-6.) 27 Impounded horses are to be sold at auction, including to locations where plaintiffs allege 28 their slaughter is likely, and horses which are not sold at auction may be sold privately or 1 killed. (Doc. 1 at 13.) USFS’s reclassification was not “supported by, disclosed in, or 2 analyzed as part of” January’s final TMP, Final EA, and finding of no significant impact. 3 (Doc. 1 at 10; see Doc. 2-2 at 100, 8, 83.) Additionally, the letter begins by noting the 2007 4 stipulation “prohibited the removal of horses from the Sitgreaves National Forest 5 regardless their status.” (Doc. 2-1 at 2.) But without explaining further, the letter then states 6 all the horses “currently found on the Sitgreaves National Forest are ‘unauthorized 7 livestock’” such that they can be removed. 8 Soon afterwards, plaintiffs filed a complaint alleging USFS violated the WHA, 9 NEPA,3 the Administrative Procedure Act (“APA”), and the 2007 Stipulated Settlement 10 Agreement. (Doc. 1 at 13-24.) Plaintiffs also alleged that shortly after the April 11 reclassification, third-party ranchers were seen trapping and removing a family of wild 12 horses and “claiming verbal permission from [USFS].” (Doc. 23-2 at 2.) 13 Believing the April 27, 2026 date would trigger additional action by USFS or third 14 parties, on April 22, 2026, plaintiffs filed a request for a temporary restraining order to 15 delay the USFS roundup and prevent third parties from removing wild horses. (Doc.

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Bluebook (online)
International Society for the Protection of Mustangs and Burros, et al. v. United States Department of Agriculture, et al., Counsel Stack Legal Research, https://law.counselstack.com/opinion/international-society-for-the-protection-of-mustangs-and-burros-et-al-v-azd-2026.