Kleppe v. Sierra Club

427 U.S. 390 · Decided June 28, 1976 · Supreme Court of the United States

At a glance

Kleppe v. Sierra Club was decided on June 28, 1976 by a vote of 7–2. The Court reversed the lower court's decision and remanded the case. Justice Lewis F. Powell Jr. wrote the opinion of the Court. SCDB classifies its main issue as “Natural resources and environmental protection” in the Economic Activity area.

Read the opinion

• CourtListener (Free Law Project) — opinion text
• Library of Congress — official U.S. Reports scan

Case details

How the Justices voted

Full case caption

Kleppe, Secretary of the Interior, et al. v. Sierra Club et al.

SCDB identifiers: case 1975-159, docket 1975-159-01.

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Cases on the same legal provision: National Environmental Policy Act

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Same Term, same area (Economic Activity)

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Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error