CaseTrail

Illinois v. Michigan

360 U.S. 712 · Decided June 29, 1959 · 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

Illinois v. Michigan was decided on June 29, 1959 unanimously (9–0). SCDB codes the disposition as “stay, petition, or motion granted.” The decision was issued per curiam (an unsigned opinion of the Court). SCDB classifies its main issue as “Non-real property dispute between states” in the Interstate Relations area.

Read the opinion

Case details

Citations
360 U.S. 712 · 79 S. Ct. 1443 · 3 L. Ed. 2d 1539 · 1959 U.S. LEXIS 664
Docket number
15 ORIG
Decided
June 29, 1959
Argued
May 21, 1959
Court era
Warren Court
Decision type
Per curiam (orally argued)
Disposition
Stay, petition, or motion granted
Outcome for petitioner
The petitioning party did not receive a favorable disposition
Vote
9–0 (unanimous)
Opinion assigned by
Earl Warren
How the case arrived
Original jurisdiction
Decision direction (SCDB)
Unspecifiable what this means

How the Justices voted

JusticeVoteSeparate writing
Justice Hugo L. BlackMajority
Justice Felix FrankfurterMajority
Justice William O. DouglasMajority
Justice Tom C. ClarkMajority
Chief Justice Earl WarrenMajority
Justice John M. Harlan IIMajority
Justice William J. Brennan Jr.Majority
Justice Charles E. WhittakerMajority
Justice Potter StewartMajority

Full case caption

Illinois v. Michigan et al.

SCDB identifiers: case 1958-138, docket 1958-138-01.

Other cases on “Non-real property dispute between states”

See all

Same Term, same area (Interstate Relations)

See all

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