United States: Climate Change

As we previously noted, a legal challenge to California's climate disclosure laws has made its way to the Ninth Circuit Court of Appeals, which stayed enforcement of one of the laws pending appeal.

Carbon Quarterly is a newsletter covering developments in carbon policy, law, and innovation. No matter your views on climate change policy, there is no avoiding an increasing focus on carbon regulation, resiliency planning, and energy efficiency at nearly every level of government and business

California AG Rob Bonta settled for a total of over $3.35 million with three plastic bag producers to resolve allegations that their bags failed to meet...

On January 9, 2026, a three-judge panel for the U.S. Court of Appeals for the Ninth Circuit heard oral argument in a challenge to California Senate Bills (SB) 261 and 253 in Chamber of Commerce v. Sanchez, No. 25-5327 (9th Cir. 2025).

In 2023, California enacted two major climate-related disclosure laws aimed at increasing corporate transparency on environmental impact and financial risk.

California's corporate climate disclosure litigation now turns on a question bigger than climate policy: how far a government can go in drafting corporate speech for regulated businesses.

The United States Supreme Court is currently presented with what many believe is the best opportunity for the Court to provide sorely needed guidance in the vastly growing climate change docket—where energy companies are facing liability for injuries allegedly sustained due to greenhouse gas emissions

On December 1, 2025, the California Air Resources Board (CARB) released an enforcement advisory, announcing that it will not enforce Senate Bill (SB) 261, which requires certain entities that do business in California and have $500 million or more in annual revenue to publish a biennial climate-related financial risk report.

On December 1, the California Air Resources Board ("CARB") issued an Enforcement Advisory stating that it will not enforce California Health & Safety Code § 38533 against covered entities for failing to post and submit their Climate-Related Financial Risk Report under Senate Bill 261 (the Climate-related Financial Risk Act) by the reporting deadline of January 1, 2026.