Environmental Protection Agency v. Calumet Shreveport Refining, LLC

145 S. Ct. 1735 · Decided June 18, 2025 · Supreme Court of the United States

At a glance

Environmental Protection Agency v. Calumet Shreveport Refining, LLC was decided on June 18, 2025 by a vote of 7–2. The Court vacated the lower court's decision and remanded the case. Justice Clarence Thomas wrote the opinion of the Court. SCDB classifies its main issue as “Jurisdiction of federal courts of appeals” in the Judicial Power area.

Read the opinion

• CourtListener (Free Law Project) — opinion text
• Supreme Court of the United States — slip opinions, October Term 2024
• Supreme Court of the United States — docket 23-1229

Case details

How the Justices voted

Full case caption

Environmental Protection Agency v. Calumet Shreveport Refining, LLC

SCDB identifiers: case 2024-045, docket 2024-045-01.

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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