President Donald Trump's administration has proposed repealing rules passed under former President Joe Biden to curb emissions of carbon dioxide, mercury and other air pollutants from power plants, Environmental Protection Agency Administrator Lee Zeldin said on Wednesday.

President Donald Trump's administration is moving to wipe out federal limits on power plants' climate pollution — attacking the Biden era's most ambitious attempt to use regulations to lessen the nation's output of heat-trapping gases.

The Trump administration revealed plans for repealing mandates that force power plants to curb greenhouse gas emissions, representing its most significant action yet to reverse policies combating climate change.