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Inside Agency Preemption, Catherine M. Sharkey

Michigan Law Review

A subtle shift has taken place in the mechanics of preemption, the doctrine that determines when federal law displaces state law. In the past, Congress was the leading actor, and courts and commentators focused almost exclusively on the precise wording of its statutory directives as a clue to its intent to displace state law. Federal agencies were, if not ignored, certainly no more than supporting players. But the twenty-first century has witnessed a role reversal. Federal agencies now play the dominant role in statutory interpretation. The U.S. Supreme Court has recognized the ascendancy of federal agencies in preemption disputes-an ascendancy …