Acting in good faith, the Federal Government has the undoubted right to provide for its own security, and to follow its military measures with all those supplementary proceedings which are usual and appropriate to this end. This principle surely cannot be questioned; and if so, it involves everything, leaving the question one only of practical expediency and of good faith in the choice of means. But it is said there is and indeed can be no war between the Government and any of the States; but only between the former, and certain rebellious individuals in the States. We are well aware that in the ordinary operation of the Federal Government, it acts directly on individuals and not on States. The cause of this arrangement and its purpose are well understood. But in case of war or insurrection, the power must be coextensive with the emergency which calls it forth. If States are actually in rebellion, then of necessity the Government must treat that fact according to its real nature. The fiction of supposing the State to be loyal when its citizens are all traitors, and of considering it incapable of insurrection when all its authorities are notoriously in open rebellion, would be not less pernicious in its folly and imbecility than it would be absurd to the common sense of mankind. Undoubtedly it may be true in some instances, that the rebellion has usurped authority in the States. The will of the people may have been utterly disregarded, and set aside by violence or fraud. The insurrectionary government of the State may be only the government _de facto_ and not _de jure_, using these terms with reference only to the State and its people, and not with reference to the paramount authority of the Union which, under all circumstances, deprives the insurrectionary State organization of any legal character whatever. In all cases of such usurped authority, the people of the States would have the unquestionable right to be restored to the Union upon the terms of their recent connection, without any conditions whatever. It would be the solemn duty of the United States to defend each one of its members from the violence which might thus have overthrown its legitimate government. But, on the other hand, when the people of the States themselves have inaugurated the insurrectionary movement and have voluntarily sustained it in its war upon the Government, then no such favor can reasonably be claimed for them. If excitement and delusion have suddenly hurried them into rebellion against their better judgments and their real inclinations, they are to be pitied for their misfortune, and ought to be treated with great leniency and favor; but they cannot claim exemption from those conditions which may be imperatively demanded for the future security and tranquillity of the country.