02/23/2026 | Press release | Distributed by Public on 02/23/2026 10:43
The United States Supreme Court today decided to review last year's Colorado Supreme Court ruling that allowed the City of Boulder and Boulder County's climate accountability case to proceed-granting Exxon Mobil and Suncor entities' petition to hear the case.
The City of Boulder and Boulder County's case seeks to hold the oil companies responsible for knowingly contributing to climate change while concealing the dangers of their products. In its May ruling last year, the Colorado Supreme Court concludedthat "federal law did not preempt Boulder's claims and that those claims could therefore proceed under state law." In their petition to the U.S. Supreme Court, the companies claimed that federal law shields them from state-level accountability for in-state harms. The Supreme Court will now consider the companies' bid for immunity.
The grant comes as the realities of climate alterationcontinue to mount for Colorado. Colorado is one of the fastest-warming states and continues to experience injuries associated with rising temperatures. The City of Boulder and Boulder County face significant and rising costs to address the impacts of climate change-costs that would otherwise fall on local taxpayers. Their lawsuit aims to ensure that the corporations that caused the harm pay their fair share, rather than shifting the burden to Colorado communities.
Boulder County, San Miguel County, and the City of Boulder originally sued Suncor entities and Exxon in April 2018. San Miguel County's case, which was separated from the City of Boulder and Boulder County case, is now proceeding in Denver district court and was placed on hold pending the companies' petition.
In addition to Richard Herz, Michelle Harrison, and Alison Borochoff-Porte of EarthRights International, the plaintiffs are represented by Kevin Hannon and Yohania Santana of Singleton Schreiber, LLP, the Law Office of Marco B. Simons, and Kevin K. Russell of Russell & Woofter LLC.
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EarthRights International is a non-profit, non-governmental organization that combines the power of law and the power of people to defend human rights and the environment. We envision a world where communities can always pursue justice and accountability, especially in the face of the climate crisis. In this world, people live with power and dignity, while corporations, financial institutions, and governments uphold human rights and protect the environments that sustain these communities. We have offices in Southeast Asia, the United States, and Latin America. Learn more ontheir website.