No. 17-387October Term 2017Decided May 21, 2018
Upper Skagit Tribe v. Lundgren
At bottom, the case asked whether tribal sovereign immunity blocks a state-court case over who owns a disputed acre of land.
Case status
- Current stage
- Decided
- Latest event
- Decision released May 21, 2018
- What it's about
This case arose from a boundary dispute between the Upper Skagit Indian Tribe and neighboring landowners in Washington after the Tribe claimed that about one acre on the neighbors’ side of a fence actually belonged to it. The Supreme Court considered whether the neighbors’ quiet title suit could go forward in state court despite the Tribe’s claim of sovereign immunity.
Question presented
Does a court's exercise of in rem jurisdiction overcome the jurisdictional bar of tribal sovereign immunity when the tribe has not waived immunity and Congress has not unequivocally abrogated it?
- Case path
Supreme Court of Washington / Decision released May 21, 2018
- Area
Decided Supreme Court case
Briefing
What it's about
Upper Skagit Tribe and neighboring landowners fought over about one acre on the far side of a fence in Washington. On May 21, 2018, the Supreme Court decided the case about whether the neighbors' land-ownership suit could go forward in state court despite the Tribe's sovereign immunity.
Impact
The answer affects whether tribes can be sued in state court over land boundaries when they have not agreed to be sued. That matters for tribes, nearby property owners, and anyone trying to settle a disputed property line.
What's next
The Supreme Court has finished this docket action. Any remaining boundary or title issues would have to continue, if at all, outside the Supreme Court based on that decision.
What was the main fight in Upper Skagit Tribe v. Lundgren?
The Tribe and neighboring owners disagreed over about one acre across a fence. The Court examined whether the neighbors' ownership case could continue despite tribal immunity.
Why does this case matter beyond one acre in Washington?
The outcome affects tribes and adjoining landowners in boundary fights. It also shapes when state courts can hear land-title disputes involving tribal land.
What happens after the Supreme Court's May 21, 2018 decision?
The Supreme Court's docket is finished. Any remaining title or boundary issues would continue, if at all, outside the Supreme Court.
Decision
What the Court decided
At bottom, the case asked whether tribal sovereign immunity blocks a state-court case over who owns a disputed acre of land.
Impact
The answer affects whether tribes can be sued in state court over land boundaries when they have not agreed to be sued. That matters for tribes, nearby property owners, and anyone trying to settle a disputed property line.
Not official Court text.
Opinion documents
Related cases




Grounding
- Grounding
- Primary materials plus reporting.
- Note
- Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.
- Checked
- Jul 2, 2026
- Method
- Methodology
Primary materials8
Supreme Court docket 17-387
docket | Jul 3, 2026
Primary case document
Supreme Court document | Jul 3, 2026
CourtListener docket record
docket | Jul 3, 2026
Questions Presented
brief | May 25, 2026
opinion
opinion | May 21, 2018
SupremeCourt.gov
official | Jul 2, 2026
SupremeCourt.gov
official | Jul 2, 2026
SupremeCourt.gov
official | Jul 2, 2026