Oklahoma v. EPA
Decided June 18, 2025. Clarence Thomas delivered the opinion of the Court.
Docket 23-1067 · 605 U.S. 609 (2025) · Cited 3 times
Holding
Under the Clean Air Act, EPA’s disapprovals of the Oklahoma and Utah state implementation plans are locally or regionally applicable actions reviewable in a regional court of appeals. See 42 U. S. C. §7607(b)(1).
The Court’s statement of the holding, from the opinion’s syllabus. The syllabus is prepared by the Reporter of Decisions and is not part of the opinion of the Court. Read the official opinion for authority.
How the Justices voted
Decided 8–0.
Majority · 6
- Clarence Thomas · delivered the opinion of the Court
- Sonia Sotomayor
- Elena Kagan
- Brett M. Kavanaugh
- Amy Coney Barrett
- Ketanji Brown Jackson
Concurring · 2
- John G. Roberts, Jr.
- Neil M. Gorsuch · filed an opinion concurring in the judgment
Did not participate · 1
“Concurring” means agreeing with the outcome; any split shown is the Court’s judgment, not each Justice’s reasoning. The lineup is the syllabus’s disposition of who wrote and joined each opinion. Source: the opinion’s syllabus (supremecourt.gov).
Precedents cited
Supreme Court decisions this opinion relies on, ordered by how often it cites each. Cases in our collection link through; others are named.
- United States v. Detroit Timber & Lumber Co. · 200 U.S. 321 (1906)
- Ohio v. Environmental Protection Agency · 603 U.S. 279 (2024)
Official text
Read the official opinion (PDF, supremecourt.gov)
Explore from here
Clarence Thomas’s profile · All Supreme Court opinions · The Supreme Court
Source: Supreme Court of the United States, slip opinions (2025). Citation count from the Free Law Project’s CourtListener bulk data. Data last verified 2026-08-15. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).