EPA reportedly moves to repeal 2009 climate endangerment finding

The Environmental Protection Agency (EPA), which serves as the U.S. federal environmental regulator, is reportedly looking to repeal the 2009 “endangerment finding.” This foundational policy established the legal basis for federal greenhouse gas regulation across the country. According to a report by The Wall Street Journal, EPA Administrator Lee Zeldin is looking to execute the repeal, a move that could occur possibly as early as this week. The original 2009 finding determined that greenhouse gases pose a threat to human health and welfare, which allowed the federal government to regulate emissions. While the EPA’s immediate move will only affect tailpipe emissions for cars and trucks, the Trump administration expects to use the repeal to unwind regulations in other sectors, such as power plants and industrial facilities.

The potential regulatory shift is drawing reactions from the automotive industry, where companies are preparing for a changing landscape. Tesla has opposed the repeal, asking the EPA to maintain the endangerment finding rather than revoking it. The automaker asserted that the 2009 finding was “based on a robust factual and scientific record.” If the Trump administration successfully repeals the finding, it could force companies to navigate bifurcated markets—which are defined as markets split into two distinct segments. This regulatory divergence is expected to increase operational costs for companies that operate across borders, as they will have to comply with different standards in different jurisdictions.

The Trump administration expects the policy change to save more than $1 trillion, though it has not provided detailed evidence to support this figure. However, this projected saving stands in contrast to the long-term economic costs associated with climate change. The Congressional Budget Office has asserted that nearly $1 trillion worth of real estate is threatened by rising sea levels, and mortality rates in the U.S. could be 2% higher if global warming is not abated. These domestic projections are mirrored by broader global forecasts; a 2024 study reported that climate change could trim global GDP by 17% by 2050, which is the equivalent of $38 trillion per year.

Why it matters

The potential repeal of the endangerment finding represents a fundamental shift in U.S. climate policy. This move is expected to trigger years of legal challenges and force global companies to manage increasingly fragmented regulatory environments across different jurisdictions.