What does the supremacy clause of the Constitution establish?

The supremacy clause, found in Article VI, Clause 2 of the U.S. Constitution, establishes that federal law is the supreme law of the land. This means that when there is a conflict between federal and state law, federal law prevails. This principle ensures a uniform legal framework across the nation, preventing states from enacting laws that would contradict or undermine federal statutes and policies. It is a foundational element of federalism, reinforcing the authority of the national government while still allowing for state governance in many areas. The clause helps maintain order and consistency in law, particularly in matters that cross state boundaries or deal with national interests.