For the last 40 years, federal courts have cited Chevron U.S.A. v. Natural Resources Defense Council, 467 U.S. 867 (1984), to defer to an administrative agency's "permissible" interpretation of the statutes that it administers—even when a reviewing court reads the statute differently. Chevron has long been targeted by conservatives and business interests who argue that its deferential standard robs courts of their authority and gives too much power to federal agencies.