As far as secession is concerned, the most important provision in the Constitution is Section 3, of Article III., concerning treason. There is no such thing as treason except where allegiance is due. The citizen of an independent sovereign State owes his allegiance to it, and not to a confederacy or a league the State has joined. There can be no treason except against a government proper. The establishing by the Constitution of the punishment of treason, implies the nationality of the Union, and that every inhabitant of its domain is a citizen. In the articles of the old Confederacy there was no punishment of treason; on the contrary, each State agreed in those articles to deliver up to its sister States any one that it might claim had committed treason. The first part of the two clauses of Section 3 are “Treason against the United States shall consist only in levying war against them, or in adhering to their enemies, giving them aid and comfort,” and “The Congress shall have the power to declare the punishment of treason.” The peculiarity of the introduction of this first clause is to be noticed: it is taken for granted that there is treason against the United States, and that it is expedient to limit it. The founders of our new government did not intend to have rash speech, or plots, or mere resistance to its authority punishable as the high crime of treason. They knew from the experience of their mother country the danger to personal liberty from constructive treason; so they limited the power to punish that offence, and gave it only in case of levying of war, or aiding and adhering to enemies. It has been claimed by many writers North as well as South, that admitting secession to be illegal, the United States had no authority to use force against a seceding State. At the foundation of all government must be the right to maintain itself, and by force when necessary. There is no need of the declaration of this right. The establishment of a government implies the power to compel the obedience of its subjects. This power in the government to punish as treason the levying of war against it applies directly and expressly to a State, or a combination of States, or a part of a State levying war. A foreign state, an enemy levying war, cannot commit treason. Its subjects owe no allegiance. Nor does a riot or a mob levy war. This making the levying of war treason was intended for powers within the National Government, like States and combination of States and parts of States. It was against some power that should have the organization and ability to levy or wage war; and the word levying is far reaching and extends beyond mere fighting. It could not have been intended for anything else than coercing such powers.