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Louisiana v. Mississippi

384 U.S. 24 · Decided April 18, 1966 · 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

Louisiana v. Mississippi was decided on April 18, 1966 unanimously (9–0). SCDB classifies its main issue as “Boundary dispute between states” in the Interstate Relations area.

Read the opinion

Case details

Citations
384 U.S. 24 · 86 S. Ct. 1250 · 16 L. Ed. 2d 330 · 1966 U.S. LEXIS 1819
Docket number
14 ORIG
Decided
April 18, 1966
Argued
November 16, 1965
Court era
Warren Court
Decision type
Decree
Outcome for petitioner
The petitioning party received 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 William O. DouglasMajority
Justice Tom C. ClarkMajority
Chief Justice Earl WarrenMajority
Justice John M. Harlan IIMajority
Justice William J. Brennan Jr.Majority
Justice Potter StewartMajority
Justice Byron R. WhiteMajority
Justice Abe FortasMajority

Full case caption

Louisiana v. Mississippi et al.

SCDB identifiers: case 1965-089, docket 1965-089-01.

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Same Term, same area (Interstate Relations)

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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