Which amendment is referred to as the "Reserved Powers" Clause?

The amendment known as the "Reserved Powers" Clause is the Tenth Amendment. This amendment is vital because it establishes the principle of federalism in the United States, which is the division of powers between the federal government and the states. The Tenth Amendment specifically states that powers not delegated to the federal government by the Constitution, nor prohibited to the states, are reserved to the states or to the people.

This clause emphasizes that states retain a significant amount of authority, ensuring that the federal government cannot overstep its bounds by encroaching on areas that are not expressly assigned to it by the Constitution. This amendment acts as a constitutional foundation for state sovereignty and reflects the framers' intention to limit federal power, encouraging a balance that allows states to govern areas of law and policy that are local in nature.