Walls and barriers have already been constructed across more than 650 miles of the U.S.-Mexico border. These barriers block wildlife migration, cause flooding and damage pristine wild lands, including wildlife refuges, wilderness areas, and national forests. Sierra Club Borderlands advocates for real solutions, such as comprehensive immigration reform with a path to citizenship, that address the root causes of complex border problems.

Border wall construction has blocked access to food and water resources and fragmented animal populations, leaving them vulnerable to genetic isolation, inbreeding and disease.

About Us

We are a coalition representing civil rights, faith, environmental, indigenous, LGBT, and border communities working together to protect the community, culture, land, wildlife, and environmental well-being of the border region.

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Real ID Waiver Authority Compromises Our Borderlands

Real ID Waiver Authority

The unprecedented power granted to the Secretary of Homeland Security (DHS) by Section 102 of the Real ID Act has been used multiple times to "waive in their entirety" dozens of federal laws.

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A growing coalition of organizations across the country that have publicly opposed efforts to expand or replace the border wall.

Our Coalition

A list of local governments and organizations that are against the Wall.

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Film: Ay Mariposa

Ay Mariposa tells a story of La Mariposa, Zulema, and Marianna–three characters in the Lower Rio Grande Valley of Texas whose lives are upended by plans to build a US-Mexico border wall. Watch the Film.

Photo Exhibit: Lens on the Border

Vibrant images of the Southwest landscape, the people, and the communities that have been impacted by walls and would be impacted by more border walls. See the Exhibit.

Storymap: Embattled Borderlands

The borderlands harbor some of North America’s rarest wild species and oldest human cultures. See storymap.

Support the Borderlands Project

Every dollar of your tax-deductible donation will be used to help stop further destruction from border policies and to enhance protections to ensure habitat resiliency in light of climate change impacts.


October 25, 2019

Tucson, AZ-- Today, the Acting Director of the Bureau of Land Management (BLM) William Pendley stated that Trump’s border wall is “addressing the environmental crisis impacting our nation’s most vulnerable lands.” Yet, the President’s wall has…

September 26, 2019

Washington, DC— Today, the Senate Committee on Appropriations passed the Homeland Security Appropriations Act—a budget that include $5 billion more for border walls, funding for 6,800 more immigration detention beds and 119 new border patrol agents…

September 18, 2019

Washington, DC-- Today, Secretary of the Interior David Bernhardt announced the Trump administration will transfer over 560 acres of public lands to the Army to build roughly 70 miles of border barriers. The acreage includes public and desert lands…

September 3, 2019

Washington, DC — The Trump administration announced today it will take $3.6 billion from military construction projects for 11 new border wall projects. Trump announced plans to raid  the military’s budget set aside for specific projects back in…

August 28, 2019

Rio Grande Valley, TX-- Today, human rights, conservation, and faith-based organizations called for the halt of proposed border wall construction in South Texas’ Rio Grande Valley-- a 95-mile  project Customs and Border Protection (CBP) shows will…

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