By no country or persons have these invaluable principles of international law--principles the strict observance of which is so indispensable to the preservation of social order in the world--been more earnestly cherished or sacredly respected than by those great and good men who first declared and finally established the independence of our own country. They promulgated and maintained them at an early and critical period in our history; they were subsequently embodied in legislative enactments of a highly penal character, the faithful enforcement of which has hitherto been, and will, I trust, always continue to be, regarded as a duty inseparably associated with the maintenance of our national honor. That the people of the United States should feel an interest in the spread of political institutions as free as they regard their own to be is natural, nor can a sincere solicitude for the success of all those who are at any time in good faith struggling for their acquisition be imputed to our citizens as a crime. With the entire freedom of opinion and an undisguised expression thereof on their part the Government has neither the right nor, I trust, the disposition to interfere. But whether the interest or the honor of the United States requires that they should be made a party to any such struggle, and by inevitable consequence to the war which is waged in its support, is a question which by our Constitution is wisely left to Congress alone to decide. It is by the laws already made criminal in our citizens to embarrass or anticipate that decision by unauthorized military operations on their part. Offenses of this character, in addition to their criminality as violations of the laws of our country, have a direct tendency to draw down upon our own citizens at large the multiplied evils of a foreign war and expose to injurious imputations the good faith and honor of the country. As such they deserve to be put down with promptitude and decision. I can not be mistaken, I am confident, in counting on the cordial and general concurrence of our fellow-citizens in this sentiment. A copy of the proclamation which I have felt it my duty to issue is herewith communicated. I can not but hope that the good sense and patriotism, the regard for the honor and reputation of their country, the respect for the laws which they have themselves enacted for their own government, and the love of order for which the mass of our people have been so long and so justly distinguished will deter the comparatively few who are engaged in them from a further prosecution of such desperate enterprises. In the meantime the existing laws have been and will continue to be faithfully executed, and every effort will be made to carry them out in their full extent. Whether they are sufficient or not to meet the actual state of things on the Canadian frontier it is for Congress to decide.