U.S. Says States Can't Dictate Climate Change Policy In High Court CAA Dispute

( June 5, 2026, 8:15 AM EDT) -- WASHINGTON, D.C. — The United States contends that the Clean Air Act (CAA) and the U.S. Constitution preclude the notion that a single state can “dictate how the entire country—let alone the world—addresses a global problem with indivisible global effects” in support of a group of oil and gas companies asking the U.S. Supreme Court to overturn a state high court ruling that federal law did not prohibit two Colorado municipalities’ state law claims alleging that the companies contributed to the effects of climate change....

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