The United States has a federal system of government. Under a federal system, the government has both local and national components. Each component has jurisdiction over specific areas of civic life. The mere existence of two levels of government does not make the political system federalist, however. A federalist system must be structured in such a way that power is divided between the federal government and the state government.
The 10th Amendment
Expressed Powers
Powers Denied The Federal Government
Powers Denied the States
Interstate Relations