The Supreme Court left in place two Biden administration environmental regulations aimed at reducing industry emissions of planet-warming methane and toxic mercury.
The justices did not detail their reasoning in the orders, which came after a flurry of emergency applications to block the rules from industry groups and Republican-leaning states. There were no noted dissents.
The high court is still considering challenges to a third Environmental Protection Agency (EPA) rule aimed at curbing planet-warming pollution from coal-fired power plants.
The regulations are part of a broader effort by the Biden administration aimed at curbing climate change that includes financial incentives to buy electric vehicles and upgrade infrastructure and rules tightening tailpipe pollution standards for cars and trucks.
The industry groups and states had argued the EPA overstepped its authority and set unattainable standards with the new regulations. The EPA, though, said the rules are squarely within its legal responsibilities and would protect the public.
An EPA spokesperson said the agency is pleased that the Supreme Court denied applications to stay the final methane and mercury rules. The EPA believes the rule tightening methane emissions from oil and gas drilling will deliver major climate and health benefits for all Americans, while the mercury rule will limit hazardous pollution from coal-fired power plants, spokesperson Remmington Belford said.
The methane rule will build on innovative technologies and solutions that many oil- and gas-producing states and companies are already using or have committed to use, while the mercury and air toxics rule “will ensure that the nation’s coal-fired power plants meet up-to-date standards for hazardous air pollutants,” Belford said.