Is the federal system the best way to govern the us?

The Federal System in the United States has its own advantages and disadvantages as a way of governing the people and the state. It is a government system wherein there are actually two levels of government, the national government and the government of the individual states. The national government is tasked to focus on the issues that may affect the entire country however, government of individual states must focus on their specific states. In a personal point of view, this system somehow induces the early stage of factioning in the country which is not helpful. I think, there are still other type of system that the US can use in governing Sam.