Add to ORKGFor some three decades, Chevron USA v. Natural Resources Defense Council has stood at the center of administrative law. Today, however, there are doubts about the doctrine’s continued vitality, and perhaps even its ultimate desirability. This brief article, based upon remarks delivered at Missouri Law Review symposium, suggests the scope of Chevron’s domain should be determined by its doctrinal grounding. Specifically, insofar as the Court’s subsequent application and elucidation of Chevron have indicated that the doctrine is predicated on a theory of delegation, courts should only provide such deference when the relevant power has been delegated by Congress. Correspondingly, such deference should be withheld when such delegation is absent....