US EPA moves to end climate regulation under Clean Air Act

illuminem summarises for you the essential news of the day. Read the full piece on The Washington Post or enjoy below:

🗞️ Driving the news: The U.S. Environmental Protection Agency (EPA) has proposed rescinding the endangerment finding, a foundational 2009 legal ruling that underpins federal regulation of greenhouse gas emissions
• If finalized, the move would strip the EPA of its authority under the Clean Air Act to regulate emissions from vehicles, power plants, and the oil and gas sector, effectively unraveling decades of climate-related regulation
• EPA Administrator Lee Zeldin described it as “the largest deregulatory action in the history of the United States”

🔭 The context: The endangerment finding originated after the Supreme Court’s 2007 Massachusetts v. EPA decision, which affirmed EPA’s authority to regulate carbon dioxide and other greenhouse gases as pollutants
• Since then, successive administrations have used the finding to justify vehicle emissions standards, power plant rules, and methane regulations
• The Trump administration’s proposal reinterprets the Clean Air Act, asserting that EPA lacks Congressional authorization to act on climate change unilaterally

🌍 Why it matters for the planet: Rescinding the endangerment finding would fundamentally erode U.S. climate governance, delaying or reversing efforts to limit carbon emissions from key sectors
• This shift risks locking in higher emissions for decades, especially from transportation—America’s largest source of greenhouse gases
• It also undermines global efforts by signaling regulatory retreat from the world’s second-largest emitter, just as climate-driven disasters escalate in frequency and severity

⏭️ What's next: The proposed rule now enters a public comment period, with finalization expected in 2026. Legal challenges are virtually certain, potentially escalating to the Supreme Court
• If upheld, the repeal could curtail the ability of future administrations to regulate emissions under existing law, forcing Congress to legislate new climate authorities
• In the interim, automakers may slow investment in electric vehicles, and fossil fuel companies could expand operations under looser constraints

💬 One quote: “This is not just an attack on science but on common sense,” said Zealan Hoover, former senior EPA adviser. “You can ask the millions of Americans who have lost their homes and livelihoods to extreme fires, floods and storms”

📈 One stat: EPA under Zeldin estimates vehicle regulations based on the endangerment finding have cost over $1 trillion — a figure critics say omits health and environmental benefits that the Biden administration valued at $1 trillion in net gains through 2055

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