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Supremacy Clause and Federal Preemption
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AP U.S. Government
APG.049 Supremacy Clause and Federal Preemption
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Which statement gives the most complete rule for AP questions about federal preemption?
A
Federal action always wins if it is written by any federal official.
B
Preemption occurs whenever two governments regulate the same topic, even identically.
C
Conflicting state law yields only when the federal action is constitutionally valid and actually displaces the state rule.
D
State law always wins when states invoke health, safety, or morals.
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