The Supreme Court under John Marshall (the Marshall Court) was influential in construing the supremacy clause. It first ruled that it had the power to review the decisions of state courts allegedly in conflict with the supreme law, claims of "state sovereignty" notwithstanding. In Martin v. Hunter's Lessee (1816), the Supreme Court confronted the Chief Justice of Virginia, Spencer Roane, who had previously declared a Supreme Court decision unconstitutional and refused to permit the state courts to abide by it. The Court upheld the Judiciary Act, which permitted it to hear appeals from state courts, on the grounds that Congress had passed it under the supremacy clause.
The Supreme Court under John Marshall (the Marshall Court) was influential in construing the supremacy clause. It first ruled that it had the power to review the decisions of state courts allegedly in conflict with the supreme law, claims of "state sovereignty" notwithstanding. In Martin v. Hunter's Lessee (1816), the Supreme Court confronted the Chief Justice of Virginia, Spencer Roane, who had previously declared a Supreme Court decision unconstitutional and refused to permit the state courts to abide by it. The Court upheld the Judiciary Act, which permitted it to hear appeals from state courts on the grounds that Congress had passed it under the supremacy clause.