In which article of the Constitution is the Constitution described as the "supreme law of the land"?

The Constitution is described as the "supreme law of the land" in Article VI. This article establishes the supremacy of the Constitution over state laws and other sources of law, making it clear that federal laws and treaties made under the authority of the Constitution take precedence. This principle is crucial for maintaining a consistent legal framework across the United States, ensuring that no state law or local ordinance can override federal law. The supremacy clause, found within this article, is a cornerstone of U.S. federalism, confirming the Constitution's authority as the ultimate legal standard.