On a Tuesday before dawn in late August, armed federal agents and construction crews entered Tohono O'odham land in Arizona without consent, beginning work on a border wall the tribe has resisted for nearly a decade. The Tohono O'odham Nation — 37,000 people whose territory has straddled the U.S.-Mexico border for generations — argues that this act violates their sovereignty, threatens sacred sites, and disregards a proven record of managing their own border security. What unfolds here is an ancient tension made newly urgent: the question of whether a nation within a nation retains the right t
Tohono O'odham sues US over border wall construction on tribal land
The border wall construction threatens destruction of Indigenous burial sites, sacred cultural locations, and habitats affecting the 37,000-member Tohono O'odham Nation.
We would prefer to use the resources for services. But protecting our people comes first.
Mark
Why does a 1907 proclamation still matter so much? That's over a century old.
Mimi
Because the federal government says it established that 60-foot strip as federal land for security purposes. The tribe says that proclamation never gave away their sovereignty over their own territory. It's the foundation of the whole dispute.
Mark
But the tribe has been doing border security work themselves. They've reduced detentions by 95 percent. Doesn't that count for something in court?
Mimi
It should, morally. It shows they don't need a wall and they're already managing the border effectively. But the judge didn't see it that way. He declined to stop construction, which is why the federal agents showed up.
Mark
What happens to the burial sites and sacred places if the wall goes through?
Mimi
They get destroyed. The GAO report already documented blasting at a burial site. Water flows change. Habitats are altered. These are irreversible losses for a culture that's been there for centuries.
Mark
Can the tribe actually win this lawsuit?
Mimi
That depends on how the courts interpret tribal sovereignty versus federal authority. It's been contested ground for a long time. The tribe has law on their side—they're a domestic dependent nation. But the federal government has a proclamation and the power to enforce it.
Mark
What does the tribe do in the meantime while the case is ongoing?
Mimi
They keep fighting. They monitor the construction. They've put up warning signs. They continue the litigation. But the wall is being built regardless. That's the hard part—the legal process takes time, and the damage happens now.
Le Pouls
- Before sunrise, roughly twenty armed CBP agents arrived in force at three tribal sites — masked, backed by a SWAT team, a surveillance balloon overhead — and blocked tribal police from issuing trespassing citations to construction crews.
- The tribe had filed suit weeks earlier and explicitly withheld consent, yet a federal judge declined to halt construction on August 14, removing the last legal barrier standing between the wall and the ground.
- At stake are not abstractions: burial sites, sacred cultural locations, and sensitive desert habitats face direct destruction, while a 2023 GAO report confirmed that earlier construction had already blasted through a tribal burial site.
- The Tohono O'odham's own border security investments had reduced cross-border detentions by 95 percent — a record the tribe argues makes the wall not only harmful but unnecessary.
- The federal government claims a 1907 proclamation places a 60-foot border strip outside tribal jurisdiction; the tribe disputes this, and the courts must now decide whose authority governs land one people has called home for far longer than the other has existed.
- Construction has begun, warning signs now line the reservation, and a legal battle expected to last years is underway — while the wall, in the meantime, continues to rise.
On a Tuesday before dawn in late August, armed federal agents and construction crews entered Tohono O'odham land in Arizona without consent, beginning work on a border wall the tribe has resisted for nearly a decade. The Tohono O'odham Nation — 37,000 people whose territory has straddled the U.S.-Mexico border for generations — argues that this act violates their sovereignty, threatens sacred sites, and disregards a proven record of managing their own border security. What unfolds here is an ancient tension made newly urgent: the question of whether a nation within a nation retains the right to refuse, and what it means when the answer given by force contradicts the one written in law.
Before sunrise on a Tuesday in late August, armed U.S. Customs and Border Protection agents arrived at three locations on Tohono O'odham land in Arizona, accompanied by construction workers. They came masked and in force, deploying a SWAT team and a surveillance balloon. When tribal police attempted to issue trespassing citations to the contractors, federal agents stopped them.
The Tohono O'odham Nation — a federally recognized tribe of roughly 37,000 members whose territory spans about 62 miles of the U.S.-Mexico border — had not consented to the construction. No one had asked. The tribe released a statement that morning calling the incursion illegal, the latest escalation in a conflict stretching back to Trump's first term, when the administration first proposed a border-spanning wall.
The tribe's opposition is rooted in both culture and law. The wall, they argue, will destroy sacred burial sites, damage fragile habitats, and alter water flows across land they have governed for generations. A 2023 Government Accountability Office report confirmed that earlier construction had already caused such harm, including blasting at a tribal burial site. The Tohono O'odham also point to their own border security record: years of investment and cooperation with federal authorities that reduced cross-border detentions by more than 95 percent — proof, they say, that a wall is as unnecessary as it is destructive.
The tribe's legislature voted unanimously in June to sue the Trump administration. But on August 14, U.S. District Judge Richard Leon declined to issue a preliminary injunction halting construction. Days later, the agents arrived before dawn.
At the legal center of the dispute is a 1907 proclamation the federal government cites to claim a 60-foot border strip falls outside tribal jurisdiction. The Tohono O'odham reject this interpretation, and the courts will now have to decide whether that century-old declaration overrides the sovereignty of a nation that has inhabited this land far longer. The tribe noted it would have preferred to spend litigation resources on services for its members — but protecting the land and the right to refuse had to come first.
The case moves forward. The construction has already begun. Warning signs line the reservation. And the wall, while the legal battle unfolds, continues to rise.
Before sunrise on a Tuesday in late August, roughly twenty armed agents from U.S. Customs and Border Protection arrived at three locations on Tohono O'odham land in Arizona, accompanied by construction workers. They came masked and in force, blocking the area with vehicles and deploying a SWAT team to secure the perimeter. A surveillance balloon hung overhead. Mexican police watched from across the border. When tribal police tried to issue trespassing citations to the contractors, federal agents prevented them from doing so.
The Tohono O'odham Nation, a federally recognized tribe of approximately 37,000 members whose territory spans roughly 62 miles of the U.S.-Mexico border, released a statement that morning describing the incursion as illegal. The tribe had not consented to the construction. No one had asked. The border wall project—a centerpiece of the Trump administration's immigration agenda—was moving forward despite years of tribal opposition and a lawsuit filed just weeks earlier to stop it.
The conflict between the Tohono O'odham and the federal government over this wall stretches back to Trump's first term, from 2017 to 2021, when the administration first proposed a border-spanning barrier. The tribe opposed it then and opposes it now. The wall, they argue, will destroy sacred burial sites, damage sensitive habitats, and alter water flows across land they have inhabited and governed for generations. A 2023 report from the Government Accountability Office, a federal watchdog, confirmed that border wall construction had already caused such harm—blasting at a tribal burial site, disrupting ecosystems.
The Tohono O'odham occupy a unique legal position. As a domestic dependent nation under U.S. law, the tribe exercises sovereignty over its own territory and is not subject to state laws. Yet that sovereignty exists in constant tension with federal authority. The Trump administration has argued that a strip of land roughly 60 feet around the border does not belong to the tribe at all, pointing to a 1907 proclamation declaring it federal property for security purposes. The tribe disputes this claim and has mounted a legal challenge.
In June, the Tohono O'odham legislature voted unanimously to sue the Trump administration over the wall. The tribe's argument rested on both principle and practical record. For years, the Tohono O'odham have invested millions of dollars in border security efforts of their own—cooperation with federal authorities to stop irregular crossings and drug smuggling. Those efforts have worked. Cross-border detentions have dropped by more than 95 percent. The tribe has proven it can secure its own border without a wall that would scar its land and culture.
But on August 14, U.S. District Judge Richard Leon declined to issue a preliminary injunction to halt construction. That decision opened the door. Within days, the federal agents and construction workers arrived before dawn.
The tribe's statement, released after the incursion, emphasized that interactions between tribal police and federal law enforcement had remained peaceful and professional. But the message was clear: the Tohono O'odham would continue to monitor and resist. The tribe noted that it would have preferred to use the resources required for litigation to provide services directly to its members. But protecting the land, the culture, and the right to say no to the federal government—that had to come first.
The case now moves forward in the courts, but the construction has already begun. The tribe has posted large warning signs across its reservation. The legal battle over whether the federal government can impose its will on tribal sovereignty, and whether a 1907 proclamation overrides the rights of a nation that has lived on this land far longer, will likely take years to resolve. In the meantime, the wall rises.
Citations marquantes
The U.S. Department of Homeland Security has chosen to disregard our sovereignty, ignoring proven border security strategies and dismissing the irreversible environmental and cultural destruction that will follow.— Tohono O'odham Nation statement
At this time, interactions between tribal police and federal law enforcement have been peaceful and professional. We will continue to monitor the situation.— Tohono O'odham Nation statement
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