New border wall construction in California threatens some of the Southwest’s most fragile ecosystems, cutting through habitats that wildlife depends on for survival. From endangered mountain lions and bighorn sheep to migratory birds and desert pollinators, many species rely on open migration corridors to find food, water, and breeding grounds. Expanding barriers across deserts, mountains, and protected public lands fragments habitats, disrupts movement, and accelerates biodiversity loss as climate change places increasing stress on native species. Construction activities, including blasting, road building, and groundwater disruption, can leave lasting damage on ecosystems that have taken centuries to develop.
Congress must investigate environmental damage, threats to cultural resources and public safety, allegations of civil rights violations and harassment of citizens on public lands, and potential corruption in border wall contracting. Lawmakers should ensure full transparency, accountability, and compliance with environmental, civil rights, and cultural resource protection laws, and hold agencies and contractors responsible for any misconduct or misuse of taxpayer funds.
The project cuts through Tecate Peak (Mount Kuuchamaa), a mountain sacred to the Kumeyaay Nation and listed on the National Register of Historic Places as a Traditional Cultural Property. It remains a living ceremonial site for a transborder people whose ancestral lands the border already divides, yet federal protections were waived to allow construction. New wall construction in Jacumba Wilderness also threatens native petroglyphs and cultural sites that are hundreds of years old.
Blasting and clearing on steep slopes above the city of Tecate have raised documented concerns about rockfall, slope failure, and mudflows. An independent technical analysis estimates that roughly 9,000 residents fall within the modeled hazard zone. The possibility that a U.S. federal project could endanger civilians across an international border without any known binational geotechnical review warrants serious congressional scrutiny.
