Federal preemption is the legal doctrine that laws of the [[United States]] supersede and trump state and local laws. The basis for preemption is the [[Supremacy Clause]] in the [[U.S. Constitution]].
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'''Federal preemption''' is the legal doctrine that laws of the [[United States]] supersede and trump state and local laws. The basis for preemption is the [[Supremacy Clause]] in the [[U.S. Constitution]].
Federal law preempts state law under three circumstances:
Federal law preempts state law under three circumstances: