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Association of American Railroads v. Randolph

A district court denied industry groups' motion for summary judgment in a challenge to California's adoption of an emissions regulation for railroads operating within the state. The groups argued that the regulation, which would require companies to phase out locomotives that are more than 23 years ...

North Dakota v. United States Department of Interior

A district court granted five states' motion to preliminarily enjoin BLM from implementing its 2024 rule that requires oil and gas operators to flare rather than vent excess methane gas to prevent waste and conserve resources. North Dakota, Montana, Texas, Wyoming, and Utah argued the rule exceeded ...

United States Sugar Corp. v. Environmental Protection Agency

In a per curiam opinion, the D.C. Circuit granted industry groups' petitions and denied environmental groups' petition to review EPA's application of a 2022 rule that classified industrial boilers built after 2010 as "new" rather than "existing" sources of hazardous air pollutants. The industry grou...