{"abstract":"In this action, the U.S. Environmental Protection Agency (EPA) is rescinding the Administrator's 2009 findings of contribution and endangerment and repealing all greenhouse gas (GHG) emission standards for light-duty, medium-duty, and heavy-duty vehicles and engines to effectuate the best reading of Clean Air Act (CAA) section 202(a)(1). The EPA determines that CAA section 202(a)(1) does not authorize the Agency to prescribe emission standards in response to global climate change concerns for multiple reasons, including the best reading of the statutory terms \"air pollution,\" \"cause,\" \"contribute,\" and \"reasonably be anticipated to endanger.\" This statutory interpretation is corroborated by application of the major questions doctrine. The EPA further determines that GHG emission standards for new motor vehicles and engines do not impact in any material way the public health and welfare concerns identified in the Administrator's prior findings in 2009. On these multiple and independent bases, the EPA concludes that it lacks statutory authority to regulate GHG emissions in response to global climate change concerns under CAA section 202(a)(1), and is not finalizing the additional bases for repeal set out in the proposed rule.","action":"Final rule.","agencies":[{"raw_name":"ENVIRONMENTAL PROTECTION AGENCY","name":"Environmental Protection Agency","id":145,"url":"https://www.federalregister.gov/agencies/environmental-protection-agency","json_url":"https://www.federalregister.gov/api/v1/agencies/145","parent_id":null,"slug":"environmental-protection-agency"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2026/02/18/2026-03157.html","cfr_references":[{"chapter":null,"citation_url":null,"part":85,"title":40},{"chapter":null,"citation_url":null,"part":86,"title":40},{"chapter":null,"citation_url":null,"part":600,"title":40},{"chapter":null,"citation_url":null,"part":1036,"title":40},{"chapter":null,"citation_url":null,"part":1037,"title":40},{"chapter":null,"citation_url":null,"part":1039,"title":40}],"citation":"91 FR 7686","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This final action is effective on April 20, 2026. The incorporation by reference of certain material listed in the action was approved by the Director of the Federal Register as of March 27, 2023, June 17, 2024, and June 21, 2024.","disposition_notes":null,"docket_ids":["EPA-HQ-OAR-2025-0194","FRL-12715-02-OAR"],"dockets":[{"supporting_documents":[{"title":"Reincarnating the \"Major Questions\" Exception to Chevron Deference as a Doctrine of Non-Interference (Or Why Massachusetts v. EPA Got It Wrong)","document_id":"EPA-HQ-OAR-2025-0194-31102"},{"title":"Rescission of the Greenhouse Gas Endangerment Finding and Motor Vehicle Greenhouse Gas Emission Standards Under the Clean Air Act: Regulatory Impact Analysis","document_id":"EPA-HQ-OAR-2025-0194-31090"},{"title":"Final Rule ICR Supporting Statement for Light- and Medium-Duty Vehicles","document_id":"EPA-HQ-OAR-2025-0194-31087"},{"title":"Climate at a Glance: Global Time Series, NOAA National Centers for Environmental Information (NCEI)","document_id":"EPA-HQ-OAR-2025-0194-31062"},{"title":"Vehicle Rule Information Collection Request - Supporting Statement, Heavy-Duty Vehicles","document_id":"EPA-HQ-OAR-2025-0194-0197"},{"title":"Documentation for OMB/Interagency Review under E.O. 12866 - Proposed Rule","document_id":"EPA-HQ-OAR-2025-0194-0090"},{"title":"Continental US Hurricane Landfall Frequency and Associated Damage Observations and Future Risks","document_id":"EPA-HQ-OAR-2025-0194-0088"},{"title":"Long-Term Forecasting of Global Carbon Dioxide Emissions Reducing Uncertainties Using a Per Capita Approach","document_id":"EPA-HQ-OAR-2025-0194-0087"},{"title":"Climate Change 2021 The Physical Science Basis","document_id":"EPA-HQ-OAR-2025-0194-0085"},{"title":"How Much Has the Sun Influenced Northern Hemisphere Temperature Trends An Ongoing Debate","document_id":"EPA-HQ-OAR-2025-0194-0081"}],"agency_name":"EPA","documents":[{"comment_count":null,"comment_start_date":null,"updated_at":"2026-02-18T10:01:50.091-05:00","comment_url":"https://www.regulations.gov/commenton/EPA-HQ-OAR-2025-0194-31029","allow_late_comments":false,"id":"EPA-HQ-OAR-2025-0194-31029","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":180,"id":"EPA-HQ-OAR-2025-0194","title":"Rescission of the Greenhouse Gas Endangerment Finding and Motor Vehicle Greenhouse Gas Emission Standards Under the Clean Air 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