OKLA. — Oklahoma Attorney General Gentner Drummond is seeking to join a federal court fight over the Environmental Protection Agency’s move to roll back a key climate change finding that has underpinned vehicle emissions regulations for more than a decade.
Drummond filed a motion to intervene with the U.S. Court of Appeals for the D.C. Circuit on March 9, 2026, backing the Trump administration’s efforts to eliminate what his office called “radical regulations of carbon emissions.”
The dispute centers on the EPA’s decision to rescind the 2009 Greenhouse Gas Endangerment Finding.
In a Final Rule issued earlier this year, the EPA concluded it lacked statutory authority to establish the Endangerment Finding, which had been used to justify vehicle emission restrictions under the Clean Air Act.
Drummond joined a coalition of 24 attorneys general seeking to support the EPA after “a gaggle of special-interest groups” petitioned the D.C. Circuit to review the Final Rule.
“Thankfully, the Trump Administration is correcting the outrageous overreach that was the hallmark of the Obama-Biden Administration,” Drummond said. “Oklahoma’s energy industry, and that of our nation, should not be hobbled by unnecessary regulations born from a radical climate agenda. A panoply of would-be vehicle emission standards would be disastrous for a robust oil and gas industry, adversely impact our economy, hurt the reliability of our electrical grids and undermine national security.”
Drummond’s office said that since taking office he has filed more than 25 legal actions opposing environmental regulations, including tailpipe emission standards and efforts aimed at eliminating gas-powered vehicles.
In addition to Oklahoma, the states joining the motion to intervene are Alabama, Alaska, Arkansas, Florida, Georgia, Idaho, Indiana, Iowa, Kansas, Kentucky, Louisiana, Mississippi, Missouri, Montana, Nebraska, North Dakota, Ohio, South Carolina, South Dakota, Tennessee, Texas, Utah, West Virginia and Wyoming.