Diamond a Ranch, Western Division, L.L.C. v. Wolf

District Court, District of Columbia·Decided September 29, 2025·No. Civil Action No. 2020-3478·Published

Opinion

UNITED STATES DISTRICT COURT FOR THE DISTRICT OF COLUMBIA

DIAMOND A RANCH, et al., Plaintiffs,

v. Case No. 20-cv-3478 (CRC)

KRISTI NOEM 1, in her official capacity as Secretary of the U.S. Department of Homeland Security, et al.,

Defendants.

MEMORANDUM OPINION

Good fences surely make good neighbors. But what happens when the unwelcome construction of a fence by the federal government causes collateral damage to a neighbor’s land? Has the government violated the neighbor’s due process rights?

Plaintiffs Diamond A Ranch, Western Division, L.L.C., and the Guadalupe Ranch Corporation (collectively “the Ranch”) own land in Arizona next to a strip of federal property along the U.S.-Mexico border. The Ranch claims that the government’s construction of the border wall on that property visited various harms on its land—chiefly debris falls from blasting activity, an increased risk of flooding, and occasional physical trespasses by workers. These transgressions, the Ranch says, deprived it of property in violation of the Fifth Amendment’s procedural and substantive due process protections. But while the government’s alleged conduct was far from neighborly, and might warrant relief through other means, the Ranch’s allegations—in both the present complaint and a proposed amended one—fall short of stating a

1 Pursuant to Federal Rule of Civil Procedure 25(d), the current Secretary of the Department of Homeland Security is automatically substituted as a party in this action.

due process violation. The Court will therefore grant the government’s motion to dismiss the case. I. Background The Court draws the following background from the Ranch’s First Amended Complaint (“FAC”) except where otherwise noted.

The Ranch owns property near the United States’ border with Mexico in Cochise County, Arizona. FAC ¶¶ 14, 45. That property abuts the Roosevelt Reservation, a sixty-foot strip of federal land along the border running from California to New Mexico. Id. ¶ 47. President Theodore Roosevelt first set aside the Reservation “as a protection against the smuggling of goods between the United States and Mexico.” Id. Today, the Reservation makes it “relatively easy for the federal government to build infrastructure to prevent illegal border crossings.” Id. The complaint describes the region of the Reservation neighboring the Ranch as “rugged, remote, and incredibly steep mountainous terrain.” Id. ¶ 48. This foreboding landscape “traditionally deterred illegal immigrants from crossing the border into the region,” and the Ranch frequently cooperated with government officials and “negotiated rights of entry” for officials “to facilitate border security improvement.” Id.

On January 25, 2017, President Trump issued Executive Order 13767, entitled “Border Security and Immigration Enforcement Improvements,” ordering the construction of a border wall. Id. ¶ 53 (citing Exec. Order No. 13767, 82 Fed. Reg. 18 (Jan. 30, 2017)). Soon thereafter, then-DHS Secretary John Kelly directed Customs and Border Protection (“CBP”) to begin work on the wall. Id. ¶ 54. And on February 15, 2019, the President declared an emergency at the southern border, which expanded the role of the Department of Defense in building the wall. Id. ¶ 55.

Pre-construction activities near the Ranch began about a year later. The Ranch alleges that on February 18, 2020, “a border wall team” comprised of personnel from CBP, the U.S. Army Corps of Engineers (“USACE”), and a private contractor entered its property without prior notice or legal authorization. Id. ¶ 59. When the Ranch complained, a CBP official purportedly assured it that the government did not plan to build near its land because the area was too rugged for construction. Id. ¶ 60. The contractors, meanwhile, indicated that any blasting required for potential construction would be minimal. Id. The Ranch insists that these assurances were illusory and that the agencies involved engaged in no meaningful consultation with the Ranch about how to minimize impact on the area prior to beginning construction. Id.

Construction began in early July 2020. According to the complaint, the construction involved “level[ing] the steep terrain” by “blast[ing] large portions of the hillsides into the valleys below.” Id. ¶ 65. Because contractors “neglected to use” necessary precautions like “blast mats, shields, or walls,” they “blasted demolition dust, shrapnel, and car-sized boulders off the Roosevelt Reservation onto Ranch Property.” Id. ¶ 66. Contractors also drove heavy equipment on its property, the Ranch claims. Id. ¶¶ 61–62. Although not stated in the complaint, the Ranch acknowledges the contractors drove on the land at this time to remove debris from the blasts. See Tr. of Mot. Hearing, Sep. 2025 (“Sep. 2025. Tr.”), ECF No. 84, at 40:24–41:7.

The Ranch highlights work done on “Shadow Mountain,” an “extremely steep” rock feature that is positioned such that “any debris displaced from Roosevelt Reservation would predictably roll far down the hill onto the Ranch property.” FAC ¶ 98. According to the Ranch, the government offered assurances that contractors would prevent debris falls from this work and other efforts, but some of the most destructive activity came after those promises. Id. ¶¶ 99–103.

The debris blasts reportedly caused and will continue to cause adverse environmental consequences for the Ranch and the surrounding waterways and land. See, e.g., id. ¶¶ 69, 73.

The Ranch also emphasizes construction work in the bed of Guadalupe Creek, a seasonal creek which flows south through the Guadalupe Canyon into Mexico and traverses the Ranch’s property. Id. ¶ 72. The Ranch describes attempts to work with the construction team to find a “workable solution” for reducing the risks of flooding due to the placement of barriers in the creek bed. Id. ¶ 74. The Ranch alleges that the government initially refused to share a study it had completed on the issue and that when the Ranch finally did see the study, it was too “meager” for the government to make “informed” decisions about construction in the creek bed. Id. The Ranch claims that it offered the government more detailed records concerning rainfall in the canyon watershed to supplement its own research, but the assistance was refused. Id. ¶ 75. According to the Ranch, the government began erecting obstructions in the creek bed despite assurances that it would not do so. Id. ¶¶ 77, 80.

The Ranch further contends that the government dealt with its representatives in bad faith. Id. ¶ 92. Despite going through the motions of consultation, the Ranch says, the agencies involved did not stop entering its land or seek to negotiate a right of entry; did not ensure that contractors stayed within the boundaries of the Roosevelt Reservation; did not follow through on various assurances made to the Ranch about how the construction would proceed, including commitments to stop debris falls; did not provide studies or reports on the impact of the project; and did nothing to fix damage created by the construction despite promises to do so. Id. ¶¶ 92– 103.

The Ranch filed this suit in November 2020. It named as defendants the Secretary of Homeland Security and officials of CBP, the U.S. Border Control, and USACE acting in their

official capacities, as well as USACE itself. The complaint advanced three claims for relief: the first for a violation of the Ranch’s procedural due process rights, the second for a violation of its substantive due process rights, and the third, against USACE only, for a violation of the Freedom of Information Act. The Ranch has since voluntarily dismissed its FOIA claim. See ECF No. 75. In addition to requesting injunctive relief, the complaint sought a temporary restraining order and preliminary injunction to halt then-ongoing construction near the Ranch’s property.

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