Groups ask Supreme Court to leave lower court order in place halting border wall construction in southwestern Texas

Leaving the order in place means the Supreme Court does not immediately cancel the trial judge’s temporary halt. Construction must remain paused while the legal challenge continues. This preserves the situation that existed after Judge Kathleen Cardone’s ruling and prevents construction from moving ahead before the court decides whether the waivers were lawful.

Cardone’s order bars the Department of Homeland Security from continuing construction in the Big Bend region “until and unless” the government complies with environmental and other applicable laws. The administration asked the Supreme Court to pause that order, which would allow work to resume. The plaintiffs urged the justices to reject that request.

The order is temporary, not necessarily the final outcome. The Supreme Court could later lift it, leave it in place, or address the larger dispute. For now, keeping it in place protects the plaintiffs’ challenge from being overtaken by blasting, bulldozing, road construction, and other barrier-related work.

The Big Bend region is in southwestern Texas, along the U.S.-Mexico border. The dispute includes areas inside Big Bend National Park. That location matters because the plaintiffs describe the landscape as one of the country’s most remote and ecologically and culturally significant places.

Judge Kathleen Cardone wrote that the Big Bend region “comprises over 25% of the U.S.-Mexico border.” She compared that large geographic reach with the region’s relatively small share of border apprehensions. The area therefore became central to the legal question about whether federal law permits special construction authority there.

The scale also raises practical stakes. A construction project spanning such a large border sector could affect national-park areas, ecosystems, cultural sites, and private property. The current court order stops construction in the region while the Supreme Court considers whether the Homeland Security secretary had authority to waive legal requirements.

The article does not name the individual environmental or conservation laws. It describes three waivers covering “various environmental and conservation laws.” Those waivers were issued to authorize border-wall construction in the Big Bend region, including parts of Big Bend National Park.

Kristi Noem and Markwayne Mullin relied on a 1996 provision of the Illegal Immigration Reform and Immigrant Responsibility Act. That provision gives the Homeland Security secretary power to waive “all legal requirements” considered necessary for expeditious construction of border walls and roads. The waivers were the mechanism used to bypass the usual requirements identified by the plaintiffs.

The missing list of laws is itself important to understanding the article’s limits. The source provides no specific statute names, permits, or protections. It instead focuses on whether Congress clearly authorized such broad waivers and whether the Big Bend area meets the law’s condition concerning high illegal entry.

The judge questioned whether Big Bend fits federal law’s description of an area of “high illegal entry.” Her concern was the mismatch between the region’s geographic size and its apprehension numbers. Big Bend covers over 25% of the U.S.-Mexico border but accounts for only 0.3% to 2.2% of people apprehended crossing it.

Cardone reasoned that if such a low percentage qualifies as high illegal entry, then every other border sector could qualify too. That interpretation would make the limiting words effectively meaningless. It would also allow the waiver authority to apply across the entire U.S.-Mexico border, rather than only in genuinely high-entry areas.

This reasoning supported her conclusion that the challengers were likely to win under the major questions doctrine. She said Congress could have authorized construction simply “to deter illegal crossings” if it intended such a broad result. Instead, she read the waiver authority alongside the statute’s high-entry limitation.

The major questions doctrine is a judicial rule requiring Congress to speak clearly when it gives an agency power to make decisions of vast economic or political significance. It prevents agencies from claiming sweeping authority through broad or unclear statutory language. The doctrine therefore connects major government action to Congress’s lawmaking role.

Cardone said both sides appeared to agree that waiving all legal requirements for a border wall in Big Bend was economically and politically significant. She then examined whether the Illegal Immigration Reform and Immigrant Responsibility Act clearly authorized that specific use of waiver power. She concluded that it did not.

Her reading combined the waiver provision with another provision limiting construction authority to areas of high illegal entry. Because Big Bend had a tiny share of apprehensions, she found the administration’s interpretation too broad. The doctrine thus became the basis for questioning the secretary’s authority and maintaining the temporary construction halt.

If construction resumes, the government could immediately restart blasting, bulldozing, road construction, and other border-barrier work. The plaintiffs say this could occur across one of the country’s most remote and ecologically and culturally significant landscapes. The article identifies Big Bend National Park and nearby private and community interests as part of the dispute.

The plaintiffs include an environmental group, a local landowner, and a group formed to preserve a church. Their challenge focuses on the legality of the waivers, but their filing also highlights the physical consequences of restarting work. Construction could therefore affect natural areas, cultural places, and property before the legal questions are finally answered.

The article does not determine that specific damage will occur. It reports the plaintiffs’ warning and Cardone’s temporary response. Keeping the order in place prevents construction until the government complies with environmental and other applicable laws, while lifting it could allow work to resume during the litigation.

Separation of powers divides lawmaking and enforcement responsibilities between Congress and the executive branch. An agency may carry out authority Congress gives it, but it cannot treat broad language as permission for a major policy decision when Congress has not spoken clearly. This protects Congress’s role in setting national rules.

In this dispute, the government relied on IIRIRA’s power to waive “all legal requirements” needed for expeditious border-wall construction. Cardone read that power together with language limiting barriers and roads to areas of high illegal entry. She concluded that the administration’s broader interpretation could extend waiver authority across the entire border.

The major questions doctrine supplied the court’s test for that separation-of-powers concern. Because the waivers involved major political and economic consequences, Cardone required clear congressional authorization. Her ruling means the executive branch cannot proceed under that interpretation while the temporary order remains in force.