Dozens of US States Take Legal Action Against Trump's Climate Rollback

Dozens of US States Sue Trump Over Scrapped Greenhouse Gas Ruling

A broad coalition of 36 states and local governments has launched legal action against the Trump administration, challenging its recent decision to repeal a foundational Obama-era ruling that classified greenhouse gases as a threat to public health.

What the Lawsuit Is About

The legal challenge, filed in the US Court of Appeals, targets the administration's rollback of the 2009 "endangerment finding" — a critical regulatory determination that has long served as the legal backbone for US climate and emissions policies. The coalition argues that repealing this ruling directly violates key provisions of the Clean Air Act.

The group bringing the lawsuit is notably diverse, comprising 23 states and 17 cities, counties, and state agencies. Major urban centers including New York City, Los Angeles, San Francisco, Boston, and Chicago are among those involved, alongside bodies such as the Pennsylvania Department of Environmental Protection. Several environmental advocacy organizations had already filed a comparable lawsuit the previous month.

Political Reactions and Key Statements

New York State Attorney General Letitia James was direct in her condemnation of the administration's move, stating that dismissing the ruling ignores the undeniable reality that "the climate crisis is here, and it is already reshaping the way we live." She further criticized the White House, saying it had "chosen denial" over action, stripping away protections she described as essential to the federal government's response to climate change.

President Donald Trump, by contrast, framed the repeal as a significant political win, characterizing it as a triumph over what he called the Democratic Party's "radical" energy agenda. Referring to the 2009 ruling, Trump dismissed it as the legal foundation for what he labeled the "Green New Scam."

The Environmental Protection Agency pushed back against the lawsuit in a statement to the BBC, calling it "clearly motivated by politics." The agency maintained that it had thoroughly reviewed the legal basis of the 2009 finding and concluded that it does not grant the EPA the authority to regulate vehicle emissions solely on the grounds of addressing global climate change.

A Pattern of Climate Policy Reversals

The repeal of the endangerment finding is the latest in a series of climate-related rollbacks carried out since Trump returned to the White House. His administration has already withdrawn the United States from the Paris Climate Accord — a step he also took during his first term — and has loosened fuel economy standards for automobiles.

Trump has repeatedly and publicly dismissed climate change as a "hoax" and a "con job," positions that have consistently placed him at odds with climate scientists and environmental advocates who argue that urgent action is needed to limit global temperature rise.

Former President Barack Obama was among those who sharply criticized the decision. In a social media post, Obama warned that the rollback would leave Americans "less safe, less healthy and less able to fight climate change — all so the fossil fuel industry can make even more money."

What Comes Next

With the case now before the US Court of Appeals, the outcome could have sweeping implications for the federal government's ability to regulate carbon emissions across sectors including transportation and energy production. Climate advocates and legal experts will be watching closely as the court weighs whether the administration overstepped its authority in dismantling more than a decade of established environmental policy.