"One insidious practice which sugar-coats the dose of Federal intrusion is the division of expense for public improvements or services between State and National treasuries. The ardent States-rights advocate sees in this practice a vicious weakening of the State system. The extreme federalist is apt to look upon it in cynical fashion as bribing the States into subordination. The average American, believing in our dual-sovereignty system, must feel that the policy of national doles to the States is bad and may become disastrous. We may go on yet for a time with the easy assumption that 'if the States will not, the Nation must'. But that way lies trouble. When the National Treasury contributes half, there is temptation to extravagance by the State. We have seen some examples in connection with the Federal contributions to road building. Yet there are constant demands for more Federal contributions. Whenever by that plan we take something from one group of States and give it to another group, there is grave danger that we do an economic injustice on one side and a political injury on the other. We impose unfairly on the strength of the strong, and we encourage the weak to indulge their weakness."