Blocking Dirty Oil Infrastructure

In Setback for Enbridge, PUC Rules Line 3 Review is Inadequate

Whether it moves by pipeline, by rail, or by tanker, tar sands and other oil is polluting, highly combustible, and dangerous to communities and our climate. In order to avert the worst of the climate crisis and protect our communities from devastating explosions and oil spills, we must stop the industry from building any new oil infrastructure. After more than a decade of advocacy, legal challenges, and organizing in partnership with local communities along the pipeline route and across the country, we successfully blocked the proposed Keystone XL tar sands pipeline. Now we are continuing to apply those same tools to winning fights against other pipelines, oil train terminals, and oil export facilities across the country.


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May 11, 2026

Phoenix, AZ  - Today, organizations including Sierra Club Grand Canyon Chapter, Chispa Arizona, and Solar United Neighbors, expressed disappointment in Governor Katie Hobbs’s announcement of her support for the Desert Southwest Pipeline, a methane gas pipeline that will stretch over 500 miles through three states -- Texas, New Mexico, and Arizona -- and cost more than $5.3 billion dollars.

April 30, 2026

WASHINGTON, DC – Today, the U.S. Court of Appeals for the Fourth Circuit denied motions for stay, pending judicial review, of both the Virginia Department of Environmental Quality’s (VDEQ) and the North Carolina Department of Environmental Quality’s (NCDEQ) Clean Water Act Section 401 Certifications for Mountain Valley Pipeline’s (MVP) Southgate Amendment pipeline project. 

April 29, 2026

WASHINGTON, D.C. - Several environmental groups filed a challenge to the Federal Energy Regulatory Commission’s (FERC) certificate for the controversial Southeast Supply Enhancement Project, or SSEP pipeline. 

April 23, 2026

The U.S. Supreme Court ruled unanimously against Enbridge Energy, saying the company cannot move a case from state to federal court. The lawsuit in question was brought by Enbridge in response to Michigan Attorney General Dana Nessel’s lawsuit to decommission the aging Line 5 pipeline under the Straits of Mackinac, a critical waterway. 

April 20, 2026

RICHMOND, Va. - Today, several environmental groups filed a lawsuit challenging the U.S. Army Corps of Engineers’ Clean Water Act permit for the controversial Southeast Supply Enhancement Project, or SSEP pipeline

April 3, 2026

Diné, Pueblo, and allied groups condemn the Trump Administration’s proposal to revoke Public Land Order (PLO) 7923, which withdraws federal minerals from future oil and gas leasing within approximately 10-miles of Chaco Culture National Historical Park. 

March 31, 2026

WASHINGTON, DC – Today, seven conservation and community groups filed a court challenge to the Federal Energy Regulatory Commission’s (FERC) authorization for Mountain Valley Pipeline, LLC, to construct the MVP Southgate gas pipeline. The petition for review, filed by the Southern Environmental Law Center (SELC), Appalachian Mountain Advocates, and Sierra Club in the United States Court of Appeals for the District of Columbia Circuit, asks the court to vacate the amended certificate of convenience and public necessity issued by FERC in December 2025.

March 27, 2026

RALEIGH, N.C. – Today, a group of clean air and water advocates announced the launch of the NC Pipeline Watch to monitor construction of the Southeast Supply Enhancement Project pipeline (SSEP).

March 3, 2026

WASHINGTON, D.C. — Environmental groups filed a request for rehearing for the dangerous, expensive, and unnecessary Southeast Supply Enhancement Project, or SSEP.

February 20, 2026

Yesterday, the U.S. Army Corps of Engineers issued a permit for the Southeast Supply Enhancement Project, an interstate pipeline proposed by Transcontinental Gas Pipe Line Company, LLC. The Corps’ permit, issued under Section 404 of the Clean Water Act, authorizes Transco to cut crossings through more than 150 streams and wetlands.