US Supreme Court begins term with Big Oil's climate suit appeal
Summary
On October 4, 2026, the US Supreme Court commenced its new term with a significant case involving ExxonMobil and Suncor Energy, who are seeking to dismiss a lawsuit from Boulder, Colorado, that accuses them of causing climate change and misleading the public regarding fossil fuel risks. The Boulder lawsuit, which alleges state law violations related to the companies' role in climate harm, follows a broader trend where nearly 60 state and local governments have initiated similar suits aiming for monetary damages. The Trump administration has backed Exxon and Suncor, arguing that federal law, specifically the Clean Air Act, preempts Boulder’s claims, which could have major implications for other pending cases if the Supreme Court sides with the oil companies.