Michigan-Wisconsin Pipe Line Co. v. Calvert

347 U.S. 157 · Decided February 8, 1954 · Supreme Court of the United States

At a glance

Michigan-Wisconsin Pipe Line Co. v. Calvert was decided on February 8, 1954 unanimously (9–0). The Court reversed the lower court's decision. Justice Tom C. Clark wrote the opinion of the Court. SCDB classifies its main issue as “State or local government tax” in the Economic Activity area. SCDB records that the Court declared a state or territorial law, regulation or constitutional provision unconstitutional.

Read the opinion

• CourtListener (Free Law Project) — opinion text
• Library of Congress — official U.S. Reports scan

Case details

How the Justices voted

Full case caption

Michigan-Wisconsin Pipe Line Co. v. Calvert, Comptroller of Public Accounts, et al.

SCDB identifiers: case 1953-043, docket 1953-043-01.

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Cases on the same legal provision: Article I, Section 8, Paragraph 3 (interstate commerce clause)

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Same Term, same area (Economic Activity)

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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