| Proposed rule - In this action, the U.S. Environmental Protection Agency (EPA) is proposing to repeal 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). We propose that CAA section 202(a) does not authorize the EPA to prescribe emission standards to address global climate change concerns and, on that basis, propose to rescind the Administrator's prior findings in 2009 that GHG emissions from new motor vehicles and engines contribute to air pollution which may endanger public health or welfare. We further propose, in the alternative, to rescind the Administrator's prior findings in 2009 because the EPA unreasonably analyzed the scientific record and because developments cast significant doubt on the reliability of the findings. Lastly, we propose to repeal all GHG emission standards on the alternative bases that no requisite technology for vehicle and engine emission control can address the global climate change concerns identified in the findings without risking greater harms to public health and welfare.The EPA is announcing a virtual public hearing to be held 19 and 20 August 2025. More information regarding the public hearing for this proposal is published in a supplemental document in the Federal Register (90 FR 36125). The hearing notice, registration information, and any updates to the hearing schedule will also be available at https://www.epa.gov/regulations-emissions-vehicles-and-engines/proposed-rule-reconsideration-2009-endangerment-finding. Please refer to this website for any updates regarding the hearings. The EPA does not intend to publish additional documents in the Federal Register announcing updates to the hearing schedule.Public hearing registration will be open through the last day of the hearing, however, we ask that you pre-register by 12 August 2025 if you intend to testify or are requesting special accommodations. To the extent possible, EPA will work to accommodate late requests. All attendees (including those who will not be presenting verbal testimony) must register. Please submit a separate registration form for each person attending the hearing. More information on how to join the hearing will be sent to the email address that you provide for registration. To register, please send an email to EPA-MobileSource-Hearings@epa.gov |