The recent U.S. Supreme Court decision to overturn the 1984 Chevron v. National Resources Defense Council precedent has sent shockwaves through the world of Federal rulemaking. While the Court expressly stated that it is not overturning previously decided cases that directly applied Chevron, the ruling will nevertheless greatly curtail the longstanding practice of judicial deference to Federal agencies when interpreting ambiguous statutes, marking a shift toward more rigorous judicial scrutiny. Chevron Doctrine.

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