The Supremacy Clause, found in Article VI of the U.S. Constitution, establishes the Constitution, Federal Statutes, and U.S. treaties as "the supreme law of the land." Therefore, if a state law conflicts with a federal law, the federal law must be followed.
The Supremacy Clause states:
"This Constitution, and the laws of the United States which shall be made in Pursuance thereof; and all Treaties made, or which shall be made, under the authority of the United States, shall be Supreme Law of the land; and the Judges in every state shall be bound thereby, any thing in the Constitution or Laws of any state to the contrary notwithstanding."
