CaseTrail

Federal preemption of state court jurisdiction: Supreme Court decisions

Every U.S. Supreme Court decision from the 1946 through 2025 Terms that the Supreme Court Database classifies under the issue “Federal preemption of state court jurisdiction,” part of the Federalism area.

87decisions
71%favorable to the petitioner
47%unanimous
3altered precedent or struck a law

Decisions by decade

1940s5
1950s20
1960s16
1970s7
1980s17
1990s6
2000s7
2010s6
2020s3

Most majority opinions

Legal provisions most often involved

National Labor Relations Act36
Labor-Management Relations Act11
Railway Labor Act3
Article VI, Section 2 (supremacy clause)2
Employee Retirement Income Security Act (ERISA)2
Interstate Commerce Act2
Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)1
28 USC 1446 Procedure for Removal Civil Actions1

All 87 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