Law Commons^™

Chevron's Domain, Thomas W. Merrill, Kristin E. Hickman

Faculty Scholarship

The Supreme Court's decision in Chevron U.S.A. Inc. v. Natural Resources Defense Counsel, Inc. dramatically expanded the circumstances in which courts must defer to agency interpretations of statutes. The idea that deference on questions of law is sometimes required was not new. Prior to Chevron, however, courts were said to have such a duty only when Congress expressly delegates authority to an agency "to define a statutory term or prescribe a method of executing a statutory provision.^" Outside this narrow context, whether courts would defer to an agency's legal interpretation depended upon multiple factors that courts evaluated in …