EPA Administrator Lee Zeldin speaks at a podium in an auto dealership, with other EPA staff and stakeholders standing behind him.
Environmental Protection Agency Administrator Lee Zeldin announced the agency’s proposal to rescind the 2009 Endangerment Finding at an auto dealership in Indiana on 29 July, 2025. Credit: EPA, public domain

Advocates, scientists, doctors, members of Congress, kids, parents, and other individuals spoke out in a series of hearings last week to let the Environmental Protection Agency know how they feel about a potential sea change in climate and environmental policy: the proposed repeal of the 2009 Endangerment Finding

In 2009, the EPA found that current and projected concentrations of greenhouse gases threatened the public health and welfare of current and future generations. The finding is the legal underpinning for many EPA greenhouse gas regulations. The EPA announced a proposal to rescind the finding on 29 July at an auto dealership in Indiana. If finalized, the proposed rule would repeal “all greenhouse gas emissions regulations for motor vehicles,” according to the EPA.

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Day 1 of public hearings, 19 August, opened with remarks from Aaron Szabo, assistant administrator in the Office of Air and Radiation. Szabo indicated the EPA’s proposal to reconsider the Endangerment Finding was aligned with President Trump’s commitment to “unleash American energy, lower costs for Americans, [and] revitalize the American auto industry.”

The proposal was open for public comment from 19-22 August, and remains open for written submissions.

Today marks day 1 of public hearings on the EPA’s reconsideration of the endangerment finding, a 2009 declaration that greenhouse gases threaten public health. Follow along with us👇🧵

Eos (@eos.org) 2025-08-19T11:56:59.852Z

The following nearly 12 hours of testimonies included a series of comments from state attorneys general, pleas from parents and children concerned about respiratory health, and physicians arguing that the Endangerment Finding protects their patients. 

Leslie Glustrom, a biochemist from Colorado, is speaking with a hoarse voice. Wildfire smoke in the state “makes it very difficult for me to speak, so hopefully you will take that as part of the evidence in this record,” she said.

Eos (@eos.org) 2025-08-19T13:08:58.771Z

The vast majority of speakers asked the EPA not to revoke the Endangerment Finding, and many said the proposal to do so countered EPA’s mission to protect human health and the environment.

@agu.org's own Elizabeth Landau is next up. “I am testifying on behalf of AGU and its scientists, who affirm that climate change, which is unequivocally driven by human activities that increase greenhouse gas emissions, is endangering human health and welfare in the US and globally,” she said.

Eos (@eos.org) 2025-08-19T18:39:10.743Z

The next day, hearings resumed after additional comments from Szabo and the EPA’s Bill Charmley, director of the agency’s Assessment and Standards Division. Charmley said even after the hearings, anyone could still send the EPA written comments, and that the EPA would provide a written response to the testimonies in the near future.

Today is Day 2 of the public hearing on the EPA’s reconsideration of the 2009 endangerment finding, the key ruling underpinning U.S. greenhouse gas regulations. 🧪Testimonies start at the top of the hour, and we’re following along: 👇🧵

Eos (@eos.org) 2025-08-20T13:46:54.586Z

Representatives from multiple religious organizations provided testimonies against the EPA proposal, arguing that members of certain faiths have a religious responsibility to protect the environment and keep children and vulnerable people safe from the health harms that climate change brings. 

Victoria Goebel, also EEN, says that the Bible calls us to ask justly, and that we cannot do that while ignoring the unequal impacts of climate change.Heat waves cause >12,000 deaths every year & that number will only grow. She says the proposal is a threat to life & calls this a pro-life issue.

Eos (@eos.org) 2025-08-20T14:54:53.134Z

Melanie Aron, co-chair of the Jewish Earth Alliance, said her mother, uncle, and many members of her congregation have asthma."Air quality is key to their survival," she said. "I believe it is our duty to preserve God's creation and to act as stewards, passing that gift on to future generations."

Eos (@eos.org) 2025-08-21T14:16:55.804Z

Days 3 and 4 included hour upon hour of additional testimonies, still almost entirely against the proposal. 

Day 3 of the public hearing on the EPA’s reconsideration of the endangerment finding will begin shortly.🧪As before, we’ll be following along: 👇🧵

Eos (@eos.org) 2025-08-21T11:51:10.230Z

Day 4 of the public hearing on the EPA’s reconsideration of the endangerment finding is beginning now. It is the final scheduled day of the public hearing. 🧪 We'll be following along with some of the testimony here: 👇🧵

Eos (@eos.org) 2025-08-22T14:02:57.499Z

Clean air advocacy groups, such as Moms Clean Air Force, had a strong showing at the hearings. Many parents affiliated with such groups recounted stories of watching their children suffer from asthma attacks, heat-related health problems, and the stress of growing up in a quickly changing world. 

Stephanie Hernandez from D.C. laments that she couldn't let her daughter play outside this summer due extreme heat & last summer due to smokey skies. "Climate change has influenced our family planning," saying she and her husband don't know if they want to have another child in a worsening climate.

Eos (@eos.org) 2025-08-21T12:24:12.532Z

Charlie Inglis, age 13, said the repeal would mean "moving backwards" as a country."I speak for my generation when I say that the world we will inherit will be in shambles if we permit actions such as this," he said. "Climate change isn’t some far-off future problem. It’s happening right now."

Eos (@eos.org) 2025-08-22T15:19:15.701Z

By our count, at the end of the four full days of public hearing testimony, we’d heard hundreds of Americans speak out against the EPA proposal and fewer than 20 speak in favor. Those in favor of rescinding the Endangerment Finding included representatives from the American Petroleum Institute, the CO2 Coalition, and auto industry trade groups, as well as Kathleen Sgamma, an oil and gas advocate who was under consideration to lead the U.S. Bureau of Land Management but withdrew.

—Grace van Deelen (@gvd.bsky.social), Staff Writer

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