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Louisiana v. Biden

The Fifth Circuit granted the Biden Administration's motion to stay a district court ruling enjoining federal agencies from implementing interim estimates on the social cost of greenhouse gas emissions. States had argued the president lacked authority to promulgate and enforce the estimates; that th...

Indigenous Environmental Network v. Trump

A district court dismissed as moot a yearslong lawsuit challenging President Trump's issuance of a presidential permit in 2019 for construction of a cross-border segment of the Keystone XL oil pipeline. Environmental groups had argued the former president violated the Property Clause, the Commerce C...

Exxon Mobil Corp. v. Healey

The Second Circuit affirmed in part and dismissed in part a district court ruling in a lawsuit brought by an oil company against the New York and Massachusetts attorneys general. The company had argued the states' investigations into the company's allegedly deceptive speech concerning climate change...