The apprehensions which were entertained by some of our statesmen in the earlier periods of the Government that our system was incapable of operating with sufficient energy and success over largely extended territorial limits, and that if this were attempted it would fall to pieces by its own weakness, have been dissipated by our experience. By the division of power between the States and Federal Government the latter is found to operate with as much energy in the extremes as in the center. It is as efficient in the remotest of the thirty States which now compose the Union as it was in the thirteen States which formed our Constitution. Indeed, it may well be doubted whether if our present population had been confined within the limits of the original thirteen States the tendencies to centralization and consolidation would not have been such as to have encroached upon the essential reserved rights of the States, and thus to have made the Federal Government a widely different one, practically, from what it is in theory and was intended to be by its framers. So far from entertaining apprehensions of the safety of our system by the extension of our territory, the belief is confidently entertained that each new State gives strength and an additional guaranty for the preservation of the Union itself. In pursuance of the provisions of the thirteenth article of the treaty of peace, friendship, limits, and settlement with the Republic of Mexico, and of the act of July 29, 1848, claims of our citizens, which had been "already liquidated and decided, against the Mexican Republic" amounting, with the interest thereon, to $2,023,832.51 have been liquidated and paid. There remain to be paid of these claims $74,192.26. Congress at its last session having made no provision for executing the fifteenth article of the treaty, by which the United States assume to make satisfaction for the "unliquidated claims" of our citizens against Mexico to "an amount not exceeding three and a quarter millions of dollars," the subject is again recommended to your favorable consideration.