The Preamble to the United Constitution is the introductory portion of the constitution. It has no other function other than that it establishes the fundamental principles upon which the constitution is based. It does not recognize any right. In fact, it was never used as a basis for the recognition of the right. It does not also grant any power on the part of the federal or the state government. In fact, it was never used as a source of authority for the government. However, this does not mean that it is not important. Since the Preamble establishes the guiding principles upon which the United States Constitution was based it can be used as a basis for interpreting vague and doubtful provisions of the United Constitution.

The United States Constitution is the primary document which establishes the fundamental powers of government. The United States Constitution distributes the main powers of the government to its three main branches which are the Executive, Legislative and the Judiciary.

These three departments perform different functions. In the performance of these functions that are assigned to them, these three departments are the ultimate authority. For instance, the Executive is the sole department that executes the law. The Legislative is the sole department that makes and alters laws. The Judiciary is the sole department that interprets laws. The powers of the government have been conveniently divided to these three departments. This is known as the principle of separation of powers.

However, this does not mean that the one department cannot interfere when the other department is committing a grave mistake or abuse in the exercise of their functions. The constitution also provided for the sharing of certain functions to make sure that whatever errors one branch may have committed may be corrected by the other branch. For instance,