Time indeed changes manners and notions, and so far we must expect institutions to bend to them. But time produces also corruption of principles, and against this it is the duty of good citizens to be ever on the watch, and if the gangrene is to prevail at last, let the day be kept off as long as possible.
Thomas JeffersonOur tenet ever was . . . that Congress had not unlimited powers to provide for the general welfare, but were restrained to those specifically enumerated; and that, as it was never meant that they should provide for that welfare but by the exercise of the enumerated powers, so it could not have been meant they should raise money for purposes which the enumeration did not place under their action.
Thomas Jefferson