But it was not designed by the Constitution that the Government should assume the management of domestic or foreign exchange. It is indeed authorized to regulate by law the commerce between the States and to provide a general standard of value or medium of exchange in gold and silver, but it is not its province to aid individuals in the transfer of their funds otherwise than through the facilities afforded by the Post-Office Department. As justly might it be called on to provide for the transportation of their merchandise. These are operations of trade. They ought to be conducted by those who are interested in them in the same manner that the incidental difficulties of other pursuits are encountered by other classes of citizens. Such aid has not been deemed necessary in other countries. Throughout Europe the domestic as well as the foreign exchanges are carried on by private houses, often, if not generally, without the assistance of banks; yet they extend throughout distinct sovereignties, and far exceed in amount the real exchanges of the United States. There is no reason why our own may not be conducted in the same manner with equal cheapness and safety. Certainly this might be accomplished if it were favored by those most deeply interested; and few can doubt that their own interest, as well as the general welfare of the country, would be promoted by leaving such a subject in the hands of those to whom it properly belongs. A system founded on private interest, enterprise, and competition, without the aid of legislative grants or regulations by law, would rapidly prosper; it would be free from the influence of political agitation and extend the same exemption to trade itself, and it would put an end to those complaints of neglect, partiality, injustice, and oppression which are the unavoidable results of interference by the Government in the proper concerns of individuals. All former attempts on the part of the Government to carry its legislation in this respect further than was designed by the Constitution have in the end proved injurious, and have served only to convince the great body of the people more and more of the certain dangers of blending private interests with the operations of public business; and there is no reason to suppose that a repetition of them now would be more successful.