A Supreme Court ruling on Friday effectively ended the “Chevron Deference,” a doctrine that’s largely shaped American law for the past 40 years. The decision will significantly cut federal agencies’ power.

Utah politicians rejoice at end of Chevron Doctrine; environmental activists are concerned

In 1984, the Supreme Court’s ruling in the case involving the oil company Chevron established that judges should defer to a reasonable federal agency and their interpretations when dealing with seemin...