What is the supreme law of the land?

The Constitution is recognized as the supreme law of the land because it establishes the foundational legal framework for the United States. It outlines the structure of the federal government, delineates the powers of the various branches, and sets forth the rights of citizens. This hierarchy of law is significant because any law or regulation that conflicts with the Constitution can be declared void.

The necessity of having a supreme legal authority ensures that all other laws, whether they're statutory laws that are enacted by legislatures, international treaties negotiated with foreign governments, or federal regulations created by agencies, must align with constitutional principles. Thus, the Constitution serves as the ultimate guideline against which all legislative and executive actions are measured, reinforcing its status as the highest legal authority in the country.