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It is a maxim of law that there can be no crime without a criminal intent. And this maxim is as applicable to treason as to any other crime. For example, our fathers were not traitors in fact, for resisting the British Crown, before the fourth of July, 1776—that is, before they had thrown off allegiance to him—provided they honestly believed that they were simply defending their rights against his usurpations. Even if they were mistaken in their law, that mistake, if an innocent one, could not make them traitors in fact.
For the same reason, the Southern people, if they sincerely believed—as it has been extensively, if not generally, conceded, at the North, that they did—in the so-called constitutional theory of "State Rights," did not become traitors in fact, by acting upon it; and consequently not traitors within the meaning of the Constitution.
III.
The Constitution does not say who will become traitors, by "levying war against the United States, or adhering to their enemies, giving them aid and comfort."
It is, therefore, only by inference, or reasoning, that we can know who will become traitors by these acts.
Certainly if Englishmen, Frenchmen, Austrians, or Italians, making no professions of support or friendship to the United States, levy war against them, or adhere to their enemies, giving them aid and comfort, they do not thereby make themselves traitors, within the meaning of the Constitution; and why? Solely because they would not be traitors in fact. Making no professions of support or friendship, they would practice no treachery, deceit, or breach of faith. But if they should voluntarily enter either the civil or military service of the United States, and pledge fidelity to them, (without being naturalized,) and should then betray the trusts reposed in them, either by turning their guns against the United States, or by giving aid
