The article that proclaims the constitution as the highest law of the land is Article VI, Clause 2, commonly known as the Supremacy Clause. This pivotal section of the U.S. Constitution establishes that the Constitution, along with federal laws and treaties made under its authority, takes precedence over state laws. In essence, if there is a conflict between state law and federal law, federal law prevails.
This clause is crucial for maintaining a unified legal system across the states and ensures that the rights and principles defined in the Constitution are upheld uniformly. As a result, it reinforces the authority of the federal government and underscores the importance of the Constitution as the foundational legal document of the United States.