Preemption refers to the legal doctrine that allows a higher authority, typically the federal government, to displace or override conflicting state laws or regulations. This concept is vital in understanding the balance of power within a federal system, where certain powers are reserved for the states while others are exclusively held by the federal government. Preemption ensures uniformity in legislation, particularly in areas of national interest, such as immigration and environmental protection, while also raising questions about states' rights and local governance.
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