The Supreme Court has narrowed the scope of the Clean Water Act

https://www.npr.org/2023/05/25/ [login to see] /supreme-court-epa-clean-water-act
The U.S. Supreme Court Court on Thursday significantly curtailed the power of the Environmental Protection Agency to regulate the nation's wetlands and waterways. It was the court's second decision in a year limiting the ability of the agency to enact anti-pollution regulations and combat climate change.

The challenge to the regulations was brought by Michael and Chantell Sackett, who bought property to build their dream house about 500 feet away from Idaho's Scenic Priest Lake, a 19-mile stretch of clear water that is fed by mountain streams and bordered by state and national parkland. Three days after the Sacketts started excavating their property, the EPA stopped work on the project because the couple had failed to get a permit for disturbing the wetlands on their land.

Now a conservative Supreme Court majority has used the Sackett's case to roll back longstanding rules adopted to carry out the 51-year-old Clean Water Act.

While the nine justices agreed that the Sacketts should prevail, they divided 5-to-4 as to how far to go in limiting the EPA's authority.