All of the kinds of federal preemption In the law of the United States, federal preemption is the invalidation of a U.S. state law that conflicts with federal law. The rules of preemption seek to …

The preemption doctrine is the idea that a higher authority of law will displace the law of a lower authority of law when the two authorities come into conflict.

The meaning of PREEMPTION is the right of purchasing before others; especially : one given by the government to the actual settler upon a tract of public land. How to use preemption in a …

PRE-EMPTION definition: 1. the act of preventing something from happening, especially an attack, by taking action first…. Learn more.

Preemption definition: the act or right of claiming or purchasing before or in preference to others.. See examples of PREEMPTION used in a sentence.

Preemption A doctrine based on the Supremacy Clause of the U.S. Constitution that holds that certain matters are of such a national, as opposed to local, character that federal laws preempt …

Sep 23, 2015 · In a legal context, preemption refers to the principle that certain matters which have a national effect are governed by federal laws, rather than any contradictory state or local …

Jul 25, 2025 · When a valid federal law or treaty is in place, it takes precedence over any conflicting state law. Derived directly from the Supremacy Clause, federal preemption is a …

Preemption is a legal doctrine that establishes the supremacy of federal law over state law when there is a conflict between the two. This doctrine traces its roots back to the U.S. Constitution, …

preemption in American English (priˈempʃən) noun the act or right of claiming or purchasing before or in preference to others