Federalism: Federalism is the division of power between the national government and state governments. It determines which level of government has authority over certain matters.
Police Power: Police power refers to the inherent authority that each state possesses to enact laws and regulations for the health, safety, welfare, and morals of its people.
Supremacy Clause: The Supremacy Clause in the U.S. Constitution establishes that federal law takes precedence over conflicting state laws when there is a conflict between them.