MR. PRESIDENT,--I, too, hope that the Senate will dare do everything that is right; but I hope that it will not dare to embarrass the Government at this moment, and give aid and comfort to the Rebellion. I do not say that the Senator means to give such aid and comfort, but I do say that the very speech which has just fallen from him, to the extent of its influence, will give aid and comfort. Can any Senator doubt that all who sympathize with the Rebellion will rejoice to see this Senate discussing the question of peace and war with a great European power? Can any one doubt that the Rebels over the way will rejoice and clap their hands, when they hear the tidings? Sir, I will not give them any such encouragement. They shall not have it, if vote or voice of mine can prevent. I, too, Sir, am for the freest latitude of debate, but I am for the suppression of the Rebellion above and before everything else; and the desires of the Senate must all yield at this moment to the patriotic requirements of the country. There is a time for all things. There is a time to weep, and there is a time to laugh. I do not know, that, in the chapter of national calamities, there may not be a time for further war; but I do say that the duty of statesmanship here in this Chamber is to set the foot down at once against any such proposition, which, just to the extent of its recognition, must add to present embarrassments. The resolutions were taken up for consideration by a vote of 29 yeas to 16 nays, when Mr. McDougall made an elaborate speech. Mr. Sumner followed. MR. PRESIDENT,--At the present moment there is one touchstone to which I am disposed to bring every question, especially in our foreign relations; and this touchstone is its influence on the suppression of the Rebellion. A measure may in itself be just or expedient; but if it would be a present burden, if it would add to our embarrassments and troubles, and especially if it would aggravate our military condition, then, whatever may be its merits, I am against it. To the suppression of the Rebellion the country offers life and treasure without stint, and it expects that these energies shall not be sacrificed or impaired by the assumption of any added responsibilities. If I bring these resolutions to this touchstone, they fail. They may be right or wrong in fact and principle, but their influence at this moment, if adopted, must be most prejudicial to the cause of the Union. Assuming the tone of friendship to Mexico, they practically give to the Rebellion a most powerful ally, for they openly challenge war with France. There is madness in the proposition. I do not question the motives of the Senator, but it would be difficult to conceive anything more calculated to aid and comfort the Rebellion, just in proportion to its adoption. Sufficient unto the day is the evil thereof. The present war is surely enough, without adding war with France.