Which document holds sovereignty according to the Supremacy Clause?

The U.S. Constitution holds sovereignty according to the Supremacy Clause, which is found in Article VI, Clause 2 of the Constitution. This clause establishes that the Constitution, along with federal laws made pursuant to it, and treaties made under its authority, are the supreme law of the land. This means that when there is a conflict between federal law and state or local laws, the federal law prevails. The intention behind this clause is to ensure a cohesive legal framework across the nation and to prevent individual states from creating laws that could undermine federal authority.

State constitutions, international law, and local ordinances do not have the same level of authority as the U.S. Constitution. State constitutions can provide rights and regulations, but they must not conflict with federal law. International law may influence U.S. law, particularly in treaties, but it is subordinate to the U.S. Constitution. Local ordinances are specific to municipalities and can be overridden by state or federal law. Thus, the U.S. Constitution's establishment as the supreme law reflects its pivotal role in the American legal system.