Chevron USA v. NRDC, 467 US 837 (1984) (50 Most Cited Cases)

The Chevron case is number 20 on the list of most cited US Supreme Court opinions.

The Court ruled on the standard for judicial deference when reviewing certain agency rulings.

If Congress has explicitly left a gap for the agency to fill, there is an express delegation of authority to the agency to elucidate a specific provision of the statute by regulation. Such legislative regulations are given controlling weight unless they are arbitrary, capricious, or manifestly contrary to the statute.

Chevron USA Inc. v. Natural Resources Defense Council, Inc., 467 US 837 (1984)