Slocum v. Delaware
339 U.S. 239 · Decided April 10, 1950 · Supreme Court of the United States
At a glance
Slocum v. Delaware was decided on April 10, 1950 by a vote of 7–1. The Court reversed the lower court's decision and remanded the case. Justice Hugo L. Black wrote the opinion of the Court. SCDB classifies its main issue as “Federal preemption of state court jurisdiction” in the Federalism area.
Read the opinion
Case details
- Citations
- 339 U.S. 239 · 70 S. Ct. 577 · 94 L. Ed. 2d 795 · 1950 U.S. LEXIS 2537
- Docket number
- 391
- Decided
- April 10, 1950
- Argued
- February 8, 1950
- Court era
- Vinson Court
- Decision type
- Opinion of the Court (orally argued)
- Disposition
- Reversed and remanded
- Outcome for petitioner
- The petitioning party received a favorable disposition
- Vote
- 7–1
- Majority opinion
- Hugo L. Black
- Opinion assigned by
- Fred M. Vinson
- How the case arrived
- Certiorari
- Issue (SCDB)
- Federal preemption of state court jurisdiction
- Issue area
- Federalism
- Legal provision
- Railway Labor Act
- Type of law
- Federal statute
- Decision direction (SCDB)
- Liberal what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice Hugo L. Black | Majority | Wrote an opinion |
| Justice Stanley F. Reed | Dissent | Wrote an opinion |
| Justice Felix Frankfurter | Majority | |
| Justice Robert H. Jackson | Majority | |
| Justice Harold H. Burton | Majority | |
| Chief Justice Fred M. Vinson | Majority | |
| Justice Tom C. Clark | Majority | |
| Justice Sherman Minton | Majority |
Did not participate: William O. Douglas.
Full case caption
Slocum, General Chairman, Lackawanna Division No. 30, Order of Railroad Telegraphers, v. Delaware, Lackawanna & Western Railroad Co.
SCDB identifiers: case 1949-060, docket 1949-060-01.
Related decisions
Other cases on “Federal preemption of state court jurisdiction”
- Order of Railway Conductors of America v. Southern Railway Co.
- Algoma Plywood & Veneer Co. v. Wisconsin Employment Relations Board
- La Crosse Telephone Corp. v. Wisconsin Employment Relations Board
- Schwabacher v. United States
- Garner v. Teamsters
- Capital Service, Inc. v. National Labor Relations Board
Cases on the same legal provision: Railway Labor Act
- Transcontinental & Western Air, Inc. v. Koppal
- Order of Railway Conductors of America v. Swan
- Railway Employes' Department v. Hanson
- Pennsylvania Railroad Co. v. Rychlik
- Brotherhood of Railroad Trainmen v. Chicago River & Indiana Railroad Co.
- California v. Taylor
Same Term, same area (Federalism)
- Regents of the University System of Georgia v. Carroll
- Wissner v. Wissner
- New Jersey Realty Title Insurance Co. v. Division of Tax Appeals of New Jersey
- United States v. Burnison
- Order of Railway Conductors of America v. Southern Railway Co.
- International Union of United Automobile, Etc. Workers of America, C. I. O. v. O'Brien
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