legal doctrine of preemption

Preemption is a legal principle where federal law takes priority over state laws. When both levels of government regulate the same area, federal law can override or nullify state regulations to ensure consistency and prevent conflicting rules. This doctrine is based on the idea that the Constitution grants the federal government certain powers, and states cannot enact laws that conflict with those federal authority. Essentially, preemption maintains a unified legal framework in areas where federal interest or regulation is deemed supreme.