Amendment X. The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.
In 1941, the Supreme Court gutted the Tenth Amendment, saying that while the states have individual powers, those powers do not overshadow those of the national government in the federal system. The Court said the amendment is a "truism." Robert J. Dole tried to resurrect the Tenth Amendment in his 1996 campaign, but people wouldn't hear of it. Dole carried a copy of the amendment around in a suit pocket, pulled it out, and read it at campaign stops. The people could not understand what he was saying, I guess, or they just could not imagine life without Bill Clinton. The Court does not treat all parts of the Constitution equally, does it?
An honest Constitutional attorney could rip a few like Greer and Felos to pieces.
Declaration of Independence, second paragraph. My fingers are too tired to type it at the moment.