Brett Kavanaugh warns conservative Supreme Court ruling could harm water quality.

The Supreme Court issued a ruling that limits the EPA's ability to protect wetlands and address water pollution, with all but one conservative justice, Brett Kavanaugh, signing off on it. Kavanaugh warned that the majority's "new test for assessing when wetlands are covered by the Clean Water Act" runs counter to the law, departs from decades of agency practice, and contradicts precedent set by the Supreme Court itself. The decision could remove protections for nearly half of all wetlands in the US.