On the last day of its term, the Supreme Court issued its decision in West Virginia v. EPA—a decision highly anticipated, and perhaps dreaded, by federal agencies, administrative law experts, and members of the public who care about the ability of the government to act to protect public health, safety, consumer interests, and the environment. The suspense stemmed from the likelihood that the Court would address the so-called “major questions doctrine”—a new approach to judicial review of agency rules that hovered in the background of a case that primarily concerned an already defunct Clean Air Act regulation.
The Court’s majority opinion in the case did not disappoint … in that it addressed the major questions doctrine. The majority opinion adopted the “major questions doctrine” as the “label” for “an identifiable body of law that has developed over a series of significant cases all addressing a particular and recurring problem: agencies asserting highly consequential power beyond what Congress could reasonably be understood to have granted.” The Chief Justice explained that, “in extraordinary cases” concerning agency action, “something more than a merely plausible textual basis” is necessary to support the agency’s claim to statutory authority. “The agency instead must point to clear congressional authorization for the power it claims.” The “major questions doctrine” is thus a “clear statement rule” applicable when an agency makes an “extravagant” assertion of statutory authority.
Where the new doctrine applies, the Court will not defer to the agency’s interpretation of its statutory authority, even if the scope of the authority is ambiguous. To that extent, the decision is a step back from the Court’s longstanding approach to review of agency action, under which it gives so-called Chevron deference to the agency’s interpretation of ambiguous statutory language, when the language reflects that Congress intended for an agency to fill in the gaps. That step back is no small thing. At the same time, deference had already failed to save the agency actions in those few “extraordinary” cases that the Court cited as forerunners of the major questions doctrine.