what did the federal government do for the U.S policy and constitution
Federalism. Federalism is a system of government in which power is divided between a national (federal) government and various state governments. In the United States, the U.S. Constitution gives certain powers to the federal government, other powers to the state governments, and yet other powers to both.he states are empowered to pass, enforce, and interpret laws, as long as they do not violate the Constitution. The federal government determines foreign policy, with exclusive power to make treaties, declare war, and control imports and exports.