A federal judge on Wednesday blocked a Biden administration rule that would expand federal protections for hundreds of thousands of rivers, lakes, streams, wetlands and other waterways in 24 states.
The Biden administration's clean water rule, issued in 2022, repealed a Trump-era rule that federal courts rejected and that environmental groups argued left waterways open to pollution.
White House officials and environmental groups have argued that loosening federal water protections would harm sources of safe drinking water across the country.
The rule applies federal protections to wetlands, tributaries and other waters that have a connection to navigable waters, and it doesn't impose a specific distance for when adjacent wetlands are protected.
West Virginia and 23 other Republican-led states sued the EPA and other federal agencies in February, alleging the rule violates the U.S. Constitution.