The Tenth Amendment, ratified in 1791, addresses the balance of power between federal and state governments. It reserves powers not delegated to the federal government for the states or the people, reflecting the principle of federalism and aiming to limit federal overreach. This amendment has been a source of ongoing debate and interpretation throughout U.S. history. It impacts various policy areas, including healthcare, education, environmental regulation, and gun control, shaping the complex landscape of American federalism and constitutional law.