What is the supreme law of the United States known as?

The supreme law of the United States is known as the Constitution. It serves as the foundational legal document that outlines the framework of government, delineates the powers and responsibilities of various branches, and establishes the rights of citizens. The Constitution is the cornerstone of American democracy, and all laws and policies must align with its principles.

While the Bill of Rights is a crucial component of the Constitution, as it comprises the first ten amendments that guarantee individual liberties, it does not encompass the entire framework of governance. The Preamble is an introductory statement that outlines the purposes of the Constitution but does not constitute law on its own. The Declaration of Independence, although a significant historical document, primarily articulates the rationale for separation from British rule rather than establishing any legal framework. Thus, the Constitution stands out as the ultimate authority in the United States legal system.