The Environmental Protection Agency (EPA) announced on Monday the formal repeal of the 2009 Endangerment Finding, a seminal regulatory determination that identified greenhouse gases as a threat to public health and welfare. The move, orchestrated under the leadership of EPA Administrator Lee Zeldin, represents a fundamental shift in the federal government’s legal obligation to regulate carbon dioxide and other heat-trapping emissions under the Clean Air Act. In immediate response to the decision, the climate advocacy organization Protect Our Winters (POW) issued a formal demand for Administrator Zeldin’s resignation, citing a "dangerous new low" for the agency and an abandonment of its core mission to protect the environment and human health.
The repeal targets the scientific and legal foundation upon which nearly all federal climate regulations have been built for the past fifteen years. By rescinding the finding, the EPA effectively argues that the link between greenhouse gas emissions and catastrophic environmental impacts does not meet the statutory threshold for federal intervention. This decision has sparked a firestorm of criticism from scientific communities, tribal nations, and the outdoor recreation industry, even as it receives support from sectors of the fossil fuel industry seeking a reduction in regulatory oversight.
The Legal and Scientific Significance of the Endangerment Finding
To understand the magnitude of the current repeal, it is necessary to examine the history of the 2009 Endangerment Finding. The finding was the EPA’s response to the 2007 Supreme Court ruling in Massachusetts v. EPA, which determined that greenhouse gases are pollutants under the Clean Air Act. The Court ruled that the EPA must determine whether these emissions contribute to air pollution that may reasonably be anticipated to endanger public health or welfare.
In December 2009, following an exhaustive review of peer-reviewed science, the EPA issued the finding, concluding that the atmospheric concentrations of six key greenhouse gases—carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride—threatened the public health and welfare of current and future generations. This determination was not merely a policy statement; it was a legal trigger that mandated the EPA to take action to reduce emissions from vehicles, power plants, and industrial sources.
The repeal of this finding suggests a pivot in the agency’s interpretation of "endangerment." Under the Zeldin administration, the EPA has moved toward a more restrictive reading of the Clean Air Act, arguing that the impacts of global climate change are too speculative or internationally driven to justify domestic regulatory burdens. Legal experts suggest this move is intended to insulate the agency from future lawsuits that would compel it to regulate carbon emissions.
The 2025 Climate Context: "Snow Drought" in the American West
The repeal comes at a time when environmental indicators suggest accelerating climate instability. Protect Our Winters has highlighted the current state of the American West as a primary example of the "endangerment" the EPA is now choosing to ignore. As of early 2025, scientific measurements and satellite telemetry data indicate that winter snowpack across significant portions of the Western United States is at historically low levels.
Meteorologists have termed this phenomenon a "snow drought." Unlike a traditional drought caused by a lack of precipitation, a snow drought occurs when precipitation falls as rain rather than snow due to unusually high temperatures. This shift has profound implications for the hydrological cycle of the region. Mountain snowpack serves as a natural reservoir, storing water during the winter and releasing it slowly during the spring and summer months to feed rivers, sustain agriculture, and provide drinking water for tens of millions of people.
Data from the United States Department of Agriculture (USDA) National Water and Climate Center shows that in several key basins, the Snow Water Equivalent (SWE) is currently trending 30% to 50% below the 30-year median. This deficit directly impacts the Colorado River Basin, which supports seven states and multiple Tribal nations. The lack of snowpack also exacerbates wildfire risks; without a gradual melt to keep soil moisture levels high, forests become tinder-dry earlier in the season, leading to longer and more intense fire cycles.
Economic Implications for the "Outdoor State"
The outdoor recreation economy, often referred to by advocates as the "Outdoor State," represents one of the most significant sectors of the American economy. According to the Bureau of Economic Analysis (BEA), outdoor recreation contributes approximately $1.2 trillion to the U.S. Gross Domestic Product (GDP) and supports nearly 5 million jobs. This sector includes everything from skiing and snowboarding to fishing, hiking, and hunting.
Protect Our Winters emphasizes that the EPA’s deregulation efforts pose an "existential threat" to this economy. For communities in states like Colorado, Utah, Montana, and Vermont, the winter season is the primary economic driver. A shortened or non-existent winter directly translates to lost revenue for small businesses, reduced tax tallies for local governments, and the evaporation of seasonal employment.
The $1.2 trillion figure reflects more than just lift tickets and gear sales; it encompasses the hospitality industry, manufacturing, and transportation. When the EPA removes the legal framework for addressing the root cause of warming—fossil fuel emissions—it effectively prioritizes the short-term profits of the energy sector over the long-term viability of the recreation sector.
A Chronology of EPA Policy Shifts (2007–2025)
The trajectory of U.S. climate policy has been marked by significant shifts in executive priorities. The following timeline outlines the path to the current repeal:
- April 2007: The Supreme Court rules in Massachusetts v. EPA that the EPA has the authority to regulate greenhouse gases if they are found to endanger public health.
- December 2009: The EPA issues the Endangerment Finding, establishing the scientific basis for climate regulation.
- 2012–2015: The EPA introduces the Clean Power Plan and fuel economy standards for light-duty vehicles, both predicated on the Endangerment Finding.
- 2017–2020: The Trump administration attempts to weaken various climate rules but stops short of repealing the Endangerment Finding itself, citing the high legal bar for overturning a science-based determination.
- 2021–2024: The Biden administration reinstates and strengthens climate protections, utilizing the Endangerment Finding to justify new methane rules and stricter power plant emissions limits.
- January 2025: Following a change in administration, Lee Zeldin is appointed EPA Administrator. The agency begins an immediate review of foundational environmental policies.
- Present Day: The EPA formally repeals the Endangerment Finding, signaling a complete withdrawal from mandatory greenhouse gas regulation.
Official Responses and Industry Reactions
The repeal has drawn sharply divided reactions from various stakeholders. While environmental groups and the outdoor industry have called for Administrator Zeldin’s resignation, other groups have signaled support for the move.
Proponents of the Repeal:
Industry trade groups representing fossil fuel interests and some manufacturing sectors have welcomed the decision. These organizations argue that the 2009 finding was an "overreach" that allowed the EPA to bypass Congress and implement sweeping economic changes via executive fiat. They contend that the repeal provides "regulatory certainty" and will lower energy costs for American consumers by removing the threat of carbon taxes or expensive emissions-control mandates.
Critics and Legal Analysts:
Environmental law experts suggest that the repeal will face immediate and rigorous challenges in the federal court system. Critics argue that for the EPA to legally repeal the finding, it must provide new, peer-reviewed scientific evidence that greenhouse gases are not harmful—a task that contradicts the overwhelming consensus of the global scientific community, including NASA and the National Oceanic and Atmospheric Administration (NOAA).
"The EPA cannot simply ignore decades of climate science because the political leadership has changed," said one senior legal analyst. "To rescind a finding of endangerment, the agency must prove the science has changed. All available data shows the opposite: the danger is increasing."
Broader Environmental and Social Impacts
Beyond the economic and legal battles, the repeal of the Endangerment Finding has direct implications for public health. Greenhouse gas pollution is often correlated with other "criteria pollutants," such as particulate matter and nitrogen oxides, which cause respiratory and cardiovascular diseases. By dismantling the tools used to limit carbon, the EPA may also be slowing progress on reducing smog and localized air pollution.
Tribal nations have also voiced significant concern. Many Indigenous communities rely on stable ecosystems for traditional food sources, such as salmon in the Pacific Northwest, which are threatened by warming river temperatures. The "snow drought" and subsequent water scarcity hit these communities particularly hard, often affecting treaty-protected rights to water and natural resources.
Conclusion: The Path Forward
The demand for Lee Zeldin’s resignation by Protect Our Winters underscores the deepening divide between federal environmental policy and the realities of climate change felt on the ground. As the EPA moves forward with its agenda of deregulation, the conflict is likely to shift from the halls of the agency to the courtrooms of the D.C. Circuit and the Supreme Court.
The repeal of the Endangerment Finding is not a minor policy adjustment; it is a fundamental reordering of the federal government’s relationship with the environment. For the 181 million Americans who participate in outdoor recreation and the millions more whose livelihoods depend on stable water cycles and predictable weather patterns, the EPA’s decision represents a pivot toward a future where the risks of a warming planet are left unaddressed by the very agency designed to mitigate them. As the 2025 winter continues to break records for warmth and low snowpack, the debate over the EPA’s direction will only intensify, placing the agency’s leadership under unprecedented scrutiny.
