A coalition of environmental and health groups on Wednesday filed suit against the Trump administration’s repeal of a key scientific finding that underpinned federal climate regulations.

The action taken in a Washington appeals court argues that Republican President Donald Trump’s move — which eliminated greenhouse gas standards on automobiles and placed a host of additional rules in jeopardy — was illegal.

The 2009 “endangerment finding” said that greenhouse gases harm public health, and was core to decades of federal climate policy.

Its rollback was broadly condemned by environmental groups and many Democrats, and legal action was expected.

The case was brought by a broad coalition of groups including the American Lung Association, the Clean Air Council, the Union of Concerned Scientists, the Sierra Club and the Center for Biological Diversity.

“We’re suing to stop Trump from torching our kids’ future in favor of a monster handout to oil companies,” said David Pettit, an attorney at the Center for Biological Diversity, in a statement.

“Nobody but Big Oil profits from Trump trashing climate science and making cars and trucks guzzle and pollute more. Consumers will pay more to fill up, and our skies and oceans will fill up with more pollution. The EPA’s rollbacks are based on political poppycock, not science or law, and the courts should see it that way.”

According to the coalition, the Trump administration’s justifications for the repeal do not hold water and have already been litigated.

The Supreme Court has reaffirmed the endangerment finding multiple times — most recently in 2022, when the court’s composition was much the same as today. It’s likely the issue eventually will land there once again.