The United States Constitution established a federal system, not a national government. States continued necessarily and by design as active and important centers of governmental activity. States were institutions of inherent authority, while the federal government by original intent and then explicitly by amendment, was a government of only delegated powers. Since the federal government derived its power directly from the people and acted directly on individuals, it was decisively more powerful than the pre-Constitution Confederation. But the Bill of Rights itself is evidence of the continued worry, pervasive until modified by the Reconstruction Amendments, that the federal government might, but should not, overwhelm the states.