( 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....