The concept of federal law taking precedence over state or local law is called the preemption doctrine.

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The preemption doctrine establishes that federal law takes precedence over state or local law in cases of conflict, as established by the Supremacy Clause of the U.S. Constitution. This means that federal regulations and statutes can preempt state and local laws that are incompatible or contradictory.

The Concept of Federal Law Taking Precedence Over State or Local