At your last session I called the attention of Congress to the destruction of the public building occupied by the Treasury Department. As the public interest requires that another building should be erected with as little delay as possible, it is hoped that the means will be seasonably provided and that they will be ample enough to authorize such an enlargement and improvement in the plan of the building as will more effectually accommodate the public officers and secure the public documents deposited in it from the casualties of fire.

I have not been able to satisfy myself that the bill entitled "An act to improve the navigation of the Wabash River", which was sent to me at the close of your last session, ought to pass, and I have therefore withheld from it my approval and now return it to the Senate, the body in which it originated.

There can be no question connected with the administration of public affairs more important or more difficult to be satisfactorily dealt with than that which relates to the rightful authority and proper action of the Federal Government upon the subject of internal improvements. To inherent embarrassments have been added others resulting from the course of our legislation concerning it.

I have heretofore communicated freely with Congress upon this subject, and in adverting to it again I can not refrain from expressing my increased conviction of its extreme importance as well in regard to its bearing upon the maintenance of the Constitution and the prudent management of the public revenue as on account of its disturbing effect upon the harmony of the Union.

We are in no danger from violations of the Constitution by which encroachments are made upon the personal rights of the citizen. The sentence of condemnation long since pronounced by the American people upon acts of that character will, I doubt not, continue to prove as salutary in its effects as it is irreversible in its nature.

But against the dangers of unconstitutional acts which, instead of menacing the vengeance of offended authority, proffer local advantages and bring in their train the patronage of the Government, we are, I fear, not so safe. To suppose that because our Government has been instituted for the benefit of the people it must therefore have the power to do what ever may seem to conduce to the public good is an error into which even honest minds are too apt to fall. In yielding themselves to this fallacy they overlook the great considerations in which the Federal Constitution was founded. They forget that in consequence of the conceded diversities in the interest and condition of the different States it was foreseen at the period of its adoption that although a particular measure of the Government might be beneficial and proper in one State it might be the reverse in another; that it was for this reason the States would not consent to make a grant to the Federal Government of the general and usual powers of government, but of such only as were specifically enumerated, and the probable effects of which they could, as they thought, safely anticipate; and they forget also the paramount obligation upon all to abide by the compact then so solemnly and, as it was hoped, so firmly established.

In addition to the dangers to the Constitution springing from the sources I have stated, there has been one which was perhaps greater than all. I allude to the materials which this subject has afforded for sinister appeals to selfish feelings, and the opinion heretofore so extensively entertained of its adaptation to the purposes of personal ambition. With such stimulus it is not surprising that the acts and pretensions of the Federal Government in this behalf should some times have been carried to an alarming extent. The questions which have arisen upon this subject have related--To the power of making internal improvements within the limits of a State, with the right of territorial jurisdiction, sufficient at least for their preservation and use. To the right of appropriating money in aid of such works when carried on by a State of by a company in virtue of State authority, surrendering the claim of jurisdiction; and To the propriety of appropriation for improvements of a particular class, viz, for light houses, beacons, buoys, public piers, and for the removal of sand bars, sawyers, and other temporary and partial impediments in our navigable rivers and harbors. The claims of power for the General Government upon each of these points certainly present matter of the deepest interest. The first is, however, of much the greatest importance, in as much as, in addition to the dangers of unequal and improvident expenditures of public moneys common to all, there is super-added to that the conflicting jurisdictions of the respective governments. Federal jurisdiction, at least to the extent I have stated, has been justly regarded by its advocates as necessarily appurtenant to the power in question, if that exists by the Constitution.

That the most injurious conflicts would unavoidably arise between the respective jurisdictions of the State and Federal Governments in the absence of a constitutional provision marking out their respective boundaries can not be doubted. The local advantages to be obtained would induce the States to overlook in the beginning the dangers and difficulties to which they might ultimately be exposed. The powers exercised by the Federal Government would soon be regarded with jealousy by the State authorities, and originating as they must from implication or assumption, it would be impossible to affix to them certain and safe limits.

Opportunities and temptations to the assumption of power incompatible with State sovereignty would be increased and those barriers which resist the tendency of our system toward consolidation greatly weakened. The officers and agents of the General Government might not always have the discretion to abstain from intermeddling with State concerns, and if they did they would not always escape the suspicion of having done so. Collisions and consequent irritations would spring up; that harmony which should ever exist between the General Government and each member of the Confederacy would be frequently interrupted; a spirit of contention would be engendered and the dangers of disunion greatly multiplied.

Yet we know that not withstanding these grave objections this dangerous doctrine was at one time apparently proceeding to its final establishment with fearful rapidity. The desire to embark the Federal Government in works of internal improvement prevailed in the highest degree during the first session of the first Congress that I had the honor to meet in my present situation. When the bill authorizing a subscription on the part of the United States for stock in the Maysville and Lexington Turn Pike Company passed the two houses, there had been reported by the Committees of Internal Improvements bills containing appropriations for such objects, inclusive of those for the Cumberland road and for harbors and light houses, to the amount of $106,000,000. In this amount was included authority to the Secretary of the Treasury to subscribe for the stock of different companies to a great extent, and the residue was principally for the direct construction of roads by this Government. In addition to these projects, which had been presented to the two Houses under the sanction and recommendation of their respective Committees on Internal Improvements, there were then still pending before the committees, and in memorials to Congress presented but not referred, different projects for works of a similar character, the expense of which can not be estimated with certainty, but must have exceeded $100,000,000.