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// DOSSIER — tohono-oodham-nation-us-agents-trespassing-border-wall
Tohono O'odham Nation Accuses US Federal Agents of Trespassing for Border Wall Construction
REL_TIME: 29 Aug 2026 16:43Z · LANG: EN
On August 25, 2026, approximately 20 masked and armed U.S. Customs and Border Protection (CBP) agents, including a BORTAC SWAT team and Bureau of Indian Affairs officers, escorted contractors onto Tohono O'odham Nation land in Arizona to begin pre-construction drilling and soil sampling for a border wall. The tribe accused the federal government of illegal trespassing and violating tribal sovereignty, stating that a CBP vehicle blockade prevented tribal police from issuing citations to contractors. While the Trump administration defends the project as a critical measure to close a dangerous smuggling corridor on federally owned buffer land, the tribe and allied lawmakers condemn the action, warning of irreversible environmental and cultural destruction to sacred sites like Quitobaquito Springs.
// Background
The Tohono O'odham Nation is a federally recognized tribe of approximately 37,000 members whose ancestral lands span 62 miles along the U.S.-Mexico border between Arizona and Sonora, Mexico. Under U.S. law, federally recognized tribes are considered domestic dependent nations with sovereignty over their land. However, the federal government claims a 60-foot-wide buffer zone along the border, known as the Roosevelt Reservation, established by a 1907 presidential proclamation. Tensions over border wall construction have persisted for years, with a 2023 Government Accountability Office (GAO) report confirming that previous wall construction had damaged Native burial sites and altered natural water flows.
// Key Developments
- Approximately 20 masked, armed CBP agents and a BORTAC SWAT team escorted contractors onto Tohono O'odham land on August 25, 2026.
- The Tohono O'odham Nation accused federal agents of trespassing and using a vehicle blockade to prevent tribal police from issuing citations.
- The pre-construction activity follows an August 14, 2026, federal court ruling by Judge Richard Leon denying the tribe's request for a preliminary injunction.
- The Trump administration claims authority over the 60-foot-wide border buffer zone under a 1907 proclamation establishing the Roosevelt Reservation.
- Texas-based contractor SLSCO Ltd. is executing the project, having secured over $390 million in DHS funding since 2023.
// Timeline
-
A federal proclamation establishes the Roosevelt Reservation, a 60-foot-wide buffer zone along the border as federal land.
-
A Government Accountability Office (GAO) report finds that border wall construction has caused harm to Indigenous lands, including blasting at a tribal burial site.
-
The Tohono O'odham Nation files a lawsuit against the Trump administration to block border wall construction on its land.
-
U.S. District Judge Richard Leon denies the tribe's request for a preliminary injunction to halt construction.
-
Tribal leaders and Congresswoman Adelita Grijalva gather in Ajo and Quitobaquito Springs to demand a halt to the wall project.
-
Approximately 20 masked, armed CBP agents and contractors enter the reservation to begin pre-construction drilling and soil sampling, blocking tribal police from issuing trespassing citations.
// Perspectives
[Tohono O'odham Nation]
Opposes the border wall construction, accusing federal agents of trespassing, violating tribal sovereignty, and threatening sacred cultural and environmental sites.
[U.S. Customs and Border Protection (CBP)]
Supports the construction, arguing it is legally authorized, funded by Congress, and necessary to secure a dangerous smuggling corridor.
[U.S. Representative Adelita Grijalva and Senator Ruben Gallego]
Condemn the federal government's actions, calling for an immediate halt to unauthorized activity and accusing the administration of conducting a 'sham' consultation process.
// Quotes
“The project will close one of the most dangerous smuggling and trafficking corridors on the Southwest border: remote desert that has facilitated decades of drug loads, migrant deaths, and cartel activity.”
“The actions are putting in jeopardy our decades of successful partnership in protecting the border.”
“We have been left with no other choice... our priority MUST always be to protect our people, our culture, and to stand up for what is right.”
