The plain hard, cold FACTS, from one of the main authors of our Constitution:

    “The distinction which has been taken between the nature of a federal and state government appeared to be conclusive–that in the former, no powers could be executed, or assumed, but such as were expressly delegated; that in the latter, the indefinite power was given to the government, except on points that were by express compact reserved to the people.”–Charles Pinckney, (One of the delegates of the Federal Convention, and main authors of our Constitution), Jan. 16, 1788, [Debates In The Legislature And In Convention Of The State Of South Carolina, On The Adoption Of The Federal Constitution. [Elliot’s Debates, Vol. IV. Pg. 259-60]