Federalism: Federalism is a system where power is divided between a central government (federal) and individual state governments. It relates because giving states more power to interpret federal laws is an example of how federalism works.
Preemption: Preemption occurs when a higher level of government's law supersedes or takes precedence over conflicting state laws. It is relevant because if states have more power to interpret federal laws, conflicts may arise with preemption.
Supremacy Clause: The Supremacy Clause establishes that the Constitution, federal laws, and treaties are "the supreme law of the land" which means they take priority over state laws. This term is related because it helps define the relationship between federal and state interpretations of law.