Guam v. United States
141 S. Ct. 1608 · Decided May 24, 2021 · Supreme Court of the United States
Record summary. This page is generated from the Supreme Court Database’s coded data about the case. It describes who decided what, not the Court’s reasoning. Read the opinion itself before relying on it. Not legal advice.
At a glance
Guam v. United States was decided on May 24, 2021 unanimously (9–0). The Court reversed the lower court's decision and remanded the case. Justice Clarence Thomas 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
- Supreme Court of the United States — slip opinions, October Term 2020
- Supreme Court of the United States — docket 20-382
Case details
- Citations
- 141 S. Ct. 1608 · 209 L. Ed. 2d 691 · 2021 U.S. LEXIS 2734
- Docket number
- 20-382
- Decided
- May 24, 2021
- Argued
- April 26, 2021
- Court era
- Roberts Court
- Decision type
- Opinion of the Court (orally argued)
- Disposition
- Reversed and remanded
- Outcome for petitioner
- The petitioning party received a favorable disposition
- Vote
- 9–0 (unanimous)
- Majority opinion
- Clarence Thomas
- Opinion assigned by
- John G. Roberts Jr.
- How the case arrived
- Certiorari
- Issue (SCDB)
- Natural resources and environmental protection
- Issue area
- Economic Activity
- Legal provision
- CERCLA, 42 U.S.C. 113
- Type of law
- Infrequently litigated statute
- Decision direction (SCDB)
- Liberal what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice Clarence Thomas | Majority | Wrote an opinion |
| Justice Stephen G. Breyer | Majority | |
| Chief Justice John G. Roberts Jr. | Majority | |
| Justice Samuel A. Alito Jr. | Majority | |
| Justice Sonia Sotomayor | Majority | |
| Justice Elena Kagan | Majority | |
| Justice Neil M. Gorsuch | Majority | |
| Justice Brett M. Kavanaugh | Majority | |
| Justice Amy Coney Barrett | Majority |
Full case caption
Guam v. United States
SCDB identifiers: case 2020-060, docket 2020-060-01.
Related decisions
Other cases on “Natural resources and environmental protection”
- U.S. Forest Service v. Cowpasture River Preservation Association
- County of Maui v. Hawaii Wildlife Fund
- Atlantic Richfield Co. v. Christian
- Sackett v. Environmental Protection Agency
- Sturgeon v. Frost
- Weyerhaeuser Company v. U.S. Fish and Wildlife Service
Same Term, same area (Economic Activity)
- City of Chicago v. Fulton
- Republic of Hungary v. Simon
- Federal Republic of Germany v. Philipp
- Brownback v. King
- Facebook Inc. v. Duguid
- Federal Communications Commission v. Prometheus Radio Project
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