Appropriations for similar objects have been continued from that time to the present without interruption or dispute. As a natural consequence of the increase and extension of our foreign commerce, ports of entry and delivery have been multiplied and established, not only upon our sea-board but in the interior of the country upon our lakes and navigable rivers. The convenience and safety of this commerce have led to the gradual extension of these expenditures; to the erection of light houses, the placing, planting, and sinking of buoys, beacons, and piers, and to the removal of partial and temporary obstructions in our navigable rivers and in the harbors upon our Great Lakes as well as on the sea-board. Although I have expressed to Congress my apprehension that these expenditures have some times been extravagant and disproportionate to the advantages to be derived from them, I have not felt it to be my duty to refuse my assent to bills containing them, and have contented myself to follow in this respect in the foot-steps of all my predecessors. Sensible, however, from experience and observation of the great abuses to which the unrestricted exercise of this authority by Congress was exposed, I have prescribed a limitation for the government of my own conduct by which expenditures of this character are confined to places below the ports of entry or delivery established by law. I am very sensible that this restriction is not as satisfactory as could be desired, and that much embarrassment may be caused to the executive department in its execution by appropriations for remote and not well-understood objects. But as neither my own reflections nor the lights which I may properly derive from other sources have supplied me with a better, I shall continue to apply my best exertions to a faithful application of the rule upon which it is founded. I sincerely regret that I could not give my assent to the bill entitled: "An act to improve the navigation of the Wabash River"; but I could not have done so without receding from the ground which I have, upon the fullest consideration, taken upon this subject, and of which Congress has been heretofore apprised, and without throwing the subject again open to abuses which no good citizen entertaining my opinions could desire. I rely upon the intelligence and candor of my fellow citizens, in whose liberal indulgence I have already so largely participated, for a correct appreciation on my motives in interposing as I have done on this and other occasions checks to a course of legislation which, without in the slightest degree calling in question the motives of others, I consider as sanctioning improper and unconstitutional expenditures of public treasure.