The powers contained in a constitution...ought to be construed liberally in advancement of the public good.
Alexander HamiltonThere is no position which depends on clearer principles than that every act of a delegated authority, contrary to the commission under which it is exercised, is void. No legislative act, therefore, contrary to the Constitution, can be valid.
Alexander HamiltonThe administration of private justice between the citizens of the same state, the supervision of agriculture and of other concerns of a similar nature, all those things in short which are proper to be provided for by local legislation, can never be desirable cares of a general jurisdiction . . . the attempt to exercise these powers would be as troublesome as it would be nugatory; and the possession of them, for that reason, would contribute nothing to the dignity, to the importance, or to the splendour of the national government.
Alexander HamiltonThe Spirit of Enterprise, which characterizes the commercial part of America, has left no occasion of displaying itself unimproved. It is not at all probable that this unbridled spirit would pay much respect to those regulations of trade by which particular States might endeavor to secure exclusive benefits to their own citizens.
Alexander Hamilton