The Patriot Post
Founders' Quote Daily

"I consider the foundation of the Constitution as laid on this
ground that 'all powers not delegated to the United States, by the
Constitution, nor prohibited by it to the states, are reserved to
the states or to the people.' To take a single step beyond the
boundaries thus specially drawn around the powers of Congress,
is to take possession of a boundless field of power, not longer
susceptible of any definition."

-- Thomas Jefferson (Opinion on the Constitutionality of a National
Bank, 15 February 1791)

Reference: The Papers of Thomas Jefferson, Boyd, ed., vol. 19 (276)