Which document serves as the foundation for the United States government?

The United States Constitution serves as the foundation for the United States government as it establishes the framework for the national government, outlining the structure, powers, and responsibilities of each branch of government. It provides the fundamental principles and guidelines by which the government operates, including the separation of powers, checks and balances, and the rights of citizens. The Constitution also supersedes all other laws and documents in importance, as it is the highest legal authority in the nation.

The Articles of Confederation, while an early attempt at national governance, proved to be ineffective as it lacked provisions for a strong federal government. The Declaration of Independence, although a critical historical document that articulated the colonies' reasons for seeking independence from Britain, does not serve as a governing framework. The Bill of Rights, which comprises the first ten amendments to the Constitution, guarantees individual rights and freedoms but is part of the larger Constitution that serves as the overall foundation of the government.