Illinois v. Michigan
409 U.S. 36 · Decided October 24, 1972 · 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 October 24, 1972 unanimously (9–0). The decision was issued per curiam (an unsigned opinion of the Court). SCDB classifies its main issue as “Supreme Court original jurisdiction” in the Judicial Power area.
Read the opinion
Case details
- Citations
- 409 U.S. 36 · 93 S. Ct. 29 · 34 L. Ed. 2d 42 · 1972 U.S. LEXIS 16
- Docket number
- 57 ORIG
- Decided
- October 24, 1972
- Court era
- Burger Court
- Decision type
- Per curiam (no oral argument)
- Outcome for petitioner
- The petitioning party did not receive a favorable disposition
- Vote
- 9–0 (unanimous)
- Opinion assigned by
- Warren E. Burger
- How the case arrived
- Original jurisdiction
- Issue (SCDB)
- Supreme Court original jurisdiction
- Issue area
- Judicial Power
- Decision direction (SCDB)
- Conservative what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice William O. Douglas | Majority | |
| Justice William J. Brennan Jr. | Majority | |
| Justice Potter Stewart | Majority | |
| Justice Byron R. White | Majority | |
| Justice Thurgood Marshall | Majority | |
| Chief Justice Warren E. Burger | Majority | |
| Justice Harry A. Blackmun | Majority | |
| Justice Lewis F. Powell Jr. | Majority | |
| Justice William H. Rehnquist | Majority |
Full case caption
Illinois v. Michigan
SCDB identifiers: case 1972-003, docket 1972-003-01.
Related decisions
Other cases on “Supreme Court original jurisdiction”
- United States v. Nevada
- Arizona v. New Mexico
- Pennsylvania v. New Jersey
- California v. Arizona
- California v. Texas
- Texas v. New Mexico
Same Term, same area (Judicial Power)
- Richardson v. Morris
- O'Brien v. Brown
- California v. Krivda
- Johnson v. New York State Education Department
- Tidewater Oil Co. v. United States
- Trafficante v. Metropolitan Life Insurance Co.
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