CaseTrail

National supremacy, state tax: Supreme Court decisions

Every U.S. Supreme Court decision from the 1946 through 2025 Terms that the Supreme Court Database classifies under the issue “National supremacy, state tax,” part of the Federalism area.

14decisions
57%favorable to the petitioner
36%unanimous
3altered precedent or struck a law

Decisions by decade

1950s1
1960s5
1970s3
1980s1
1990s2
2000s1
2010s1

Most majority opinions

Legal provisions most often involved

4 U.S.C. 1111
28 U.S.C. § 13411
4 U.S.C. § 1111
Article I, Section 10, Paragraph 3 (compact clause)1
Article VI, Section 2 (supremacy clause)1
Twenty-First Amendment1
50 U.S.C. § 5741
Article I, Section 10, Paragraph 2 (export-import clause)1

All 14 decisions, newest first

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