The U.S. Environmental Protection Agency said on Wednesday it is starting efforts to reverse the Biden administration's vehicle emissions rules that would force automakers to build a rising number of electric vehicles.

The Biden administration last March finalized a rule to require carmakers to dramatically reduce carbon emissions beginning for model year 2027 light and medium-sized vehicles.

The Trump administration is rolling back several major climate policies, including two rules that target planet-warming pollution from vehicles and power plants, in a major blow to America’s progress on climate action.