The second paragraph of the section provides that no State shall, without the consent of Congress, enter into any agreement or compact with another State. It follows that, conceding the invalidity of the State acts of separation from the Union, which the whole of the preceding argument admits, the Confederation of the States claiming to have separated is not valid against the authority of the Union; but the individual States, in ratifying the Constitution of the so-called Confederate States, have done more than to make an agreement or compact with each other. Each one of them, separately, has conferred upon the same agent the authority to issue the commission in question, as its act. Moreover, this second paragraph of the tenth section strongly confirms the doctrine of the right of forcible resistance of the States in the Union. It permits a State, without the consent of Congress, to engage in war when actually invaded, or in such imminent danger as will not admit of delay. This, it will be remembered, is in the paragraph of the section imposing restrictions upon the States, and clearly justifies forcible resistance, rising even to the dignity of war, by one State, to aggressive invasion, from another or others, when the danger is so imminent that it will not admit of delay. The same paragraph also permits individual States to keep troops and ships of war, in time of war. The word "troops" here is evidently used in the sense of regular troops, forming an army, in contradistinction to the ordinary State militia. To apply, then, these principles to the facts of this case: The President of the United States had, by proclamation, on the 15th April last, called for military contingents from the various States of the Union, to put down resistance to the exercise of federal authority in the State of South Carolina and other Southern States. Those States had, by their Legislatures and Conventions of their people, decided that a proper case for resistance to the federal authority claimed to be exercised within their borders had arisen, and had authorized and commanded such resistance. The 5th section of the Act of July 13th, 1861, and the President's Proclamation of August 16th, under that Act, concede that the resistance was claimed to be under authority of the State governments; that that claim was not disavowed by the State governments; and Congress thereupon legislated, and the President exercised the authority vested in him by the Act, on the assumption that such was the fact,--prohibiting commercial intercourse with those States, authorizing captures and confiscations of the property of their citizens without regard to their political affinities, and placing them, as we contend, in all respects, upon the footing of public enemies.