Abstract
This paper addresses the nature of the federal relationship between the federal government and state authorities and the nature of the balance of the guarantees granted by the Constitution. The importance of this study stems from taking the experience of the United States as an example of the application of federalism, which managed to maintain its stability and continuity for a long time. The study found that the content of liberal philosophy and the nature of the constitutional structure of federalism were reflected in the form of guarantees which maintained the strength of the union and its continuity. The nature of the balances characterized by dynamism, movement and response in accordance with the requirements of the situation and the period. This is because the powers of the federal government and the states have not been sharply and decisively separated, although it causes some problems