EPA Administrator Lee Zeldin announced the “single largest deregulatory action in U.S. history” alongside President Trump in the White House today.
EPA is eliminating both the 2009 Greenhouse Gas (GHG) Endangerment Finding and all subsequent federal GHG emission standards for all vehicles and engines of model years 2012 to 2027 and beyond. The action also eliminates all off-cycle credits, including for the start-stop feature.
President Trump’s Day 1 Executive Order 14154 “Unleashing American Energy” tasked EPA with submitting recommendations on the legality and continuing applicability of this finding in the first 30 days of this term. On March 12, 2025, Zeldin announced that the agency was kicking off a formal reconsideration of the finding and resulting regulations. Zeldin formally announced the agency’s proposal to reconsider these actions on July 29, 2025.
“EPA’s historic move restores consumer choice, makes more affordable vehicles available for American families, and decreases the cost of living on all products by lowering the cost of trucks,” EPA said in a release.
Former President Barack Obama commented on X that because of the endangerment finding: “we’ll be less safe, less healthy and less able to fight climate change — all so the fossil fuel industry can make even more money.”
Today, the Trump administration repealed the endangerment finding: the ruling that served as the basis for limits on tailpipe emissions and power plant rules. Without it, we’ll be less safe, less healthy and less able to fight climate change — all so the fossil fuel industry can…
— Barack Obama (@BarackObama) February 12, 2026
Saving Taxpayer Dollars
The administration says the final rule will save American taxpayers over $1.3 trillion in regulations, by removing the regulatory requirements to measure, report, certify and comply with federal GHG emission standards for motor vehicles, and repeals associated compliance programs, credit provisions, and reporting obligations that exist solely to support the vehicle GHG regulatory regime.
“Lee is also working on cleaning up the horrible situation with regard to farm equipment,” President Trump said. “You could use John Deere as an example and other companies where tractors are unbelievably expensive and don’t work as well because of all of the environmental nonsense that was put on them. But the people are going to be a beneficiary because the equipment is going to be a lot less expensive and most importantly it’s going to work much better.”
This major deregulatory process included ‘substantial public input and robust analysis’ of the law following the Supreme Court decision in Loper Bright Enterprises v. Raimondo and West Virginia v. EPA. The agency held an extended 52-day public comment period, which included four days of virtual public hearings where more than 600 individuals testified. EPA received about 572,000 public comments on the proposed rule and made substantial updates to the final rule in response to comments.
“The Endangerment Finding has been the source of 16 years of consumer choice restrictions and trillions of dollars in hidden costs for Americans,” Zeldin said in a release. “Referred to by some as the ‘Holy Grail’ of the ‘climate change religion,’ the Endangerment Finding is now eliminated. The Trump EPA is strictly following the letter of the law, returning commonsense to policy, delivering consumer choice to Americans and advancing the American Dream.”
Affordable vehicle ownership is essential to the American Dream and a primary driver of economic mobility out of poverty in the U.S., the Agency explained. This action will result in average cost savings of over $2,400 per vehicle.
“As EPA Administrator, I am proud to deliver the single largest deregulatory action in U.S. history on behalf of American taxpayers and consumers,” Zeldin said. “As an added bonus, the off-cycle credit for the almost universally despised start-stop feature on vehicles has been removed.”
What Does This Mean for the Future?
Climate scientists say the overturning of the endangerment finding undermines decades of scientific progress and damages the credibility of U.S. institutions tasked with protecting the environment, the Associated Press reports. Scientists point out that rising global temperatures — the hottest years on record have all occurred since 2009 — cause more extreme weather that endangers people and causes billions of dollars in damage from more frequent and severe heat waves, wildfires, droughts and catastrophic flooding from more-intense storms.
The EPA action repeals all GHG emissions standards for cars and trucks, but experts believe it could trigger a broader undoing of climate regulations for stationary sources such as power plants and oil and gas facilities, AP reports.
David Doniger, a climate expert at the Natural Resources Defense Council, told AP that this could prevent future administrations from proposing rules to address global warming because they would have to restart the scientific and legal process to establish a new endangerment finding, which could take years and face legal challenges.
