Page:Joseph Story, Commentaries on the Constitution of the United States (1st ed, 1833, vol I).djvu/472

 432 the powers of the general government. In its exercise, when there arises a conflict in the actual laws and regulations made in pursuance of the power by the general and state governments. In the former case there is a qualification engrafted upon the generality of the power, excluding its application to such objects and purposes. In the latter, there is (at least generally) a qualification, not upon the power itself, but only upon its exercise, to the extent of the actual conflict in the operations of each. (4.) In cases of implied limitations or prohibitions of power, it is not sufficient to show a possible, or potential inconvenience. There must be a plain incompatibility, a direct repugnancy, or an extreme practical inconvenience, leading irresistibly to the same conclusion. (5.) If such incompatibility, repugnancy, or extreme inconvenience would result, it is no answer, that in the actual exercise of the power, each party may, if it chooses, avoid a positive interference with the other. The objection lies to the power itself, and not to the exercise of it. If it exist, it may be applied to the extent of controlling, defeating, or destroying the other. It can never be presumed, that the framers of the constitution, declared to be supreme, could intend to put its powers at hazard upon the good wishes, or good intentions, or discretion of the states in the exercise of their acknowledged powers. (6.) Where no such repugnancy, incompatibility, or extreme inconvenience would result, then the power in the states is restrained, not in its nature, but in its operations, and then only to the extent of the actual interference. In fact, it is obvious, that the same means may often be applied to carry into operation different powers. And a state may use the same means to effectuate an acknowledged power in itself, which congress may apply for