The constitutional provision that makes the U.S. Constitution and all valid federal laws superior to state laws is the Supremacy Clause , found in Article VI, Clause 2 of the U.S. Constitution.

Quick Scoop

  • The Supremacy Clause declares that the Constitution, federal laws made “in pursuance thereof,” and treaties are the “supreme Law of the Land.”
  • This means that when a valid federal law conflicts with a state law, the federal law prevails and the state law is overridden or invalidated to the extent of the conflict.
  • Courts use this clause as the basis for “preemption,” the doctrine explaining when and how federal law displaces state law.

Where It Is in the Constitution

  • Location: Article VI, Clause 2 of the U.S. Constitution.
  • It explicitly states that judges in every state are bound by the Constitution and federal laws, anything in state constitutions or laws to the contrary notwithstanding.

Why It Matters Today

  • It ensures a nationwide legal baseline, preventing states from undermining federal constitutional rights or federal regulatory schemes.
  • Modern legal debates about issues like immigration, environmental regulation, and drug laws often turn on how courts interpret and apply the Supremacy Clause and preemption.

Answer in exam-style form:
The provision is the Supremacy Clause of Article VI, Clause 2 of the U.S. Constitution , which states that the Constitution and laws of the United States made in pursuance thereof are the “supreme Law of the Land,” superior to any conflicting state laws.

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