The United States Constitution says treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort.
Benedict Arnold is probably the most notorious traitor. His name is synonymous with disloyalty. During the American Revolutionary War, Arnold began the war in the Continental Army, but later defected to the British Army. While still a general on the American side, he became Commander of the West Point fort in New York, and offered to surrender it to the British.
Aaron Burr, yes, an American Vice President was also one of its greatest traitors. Others would include Tokyo Rose, Julius and Ethel Rosenberg, and Aldrich Ames. These people fallen under the part of adhering to their Enemies, giving the Aid and Comfort.
ADHERING. Cleaving to, or joining; as, adhering to the enemies of the United States.
2. The constitution of the United States, art. 3, s 3, defines treason against the United States, to consist only in levying war against them or in adhering to their enemies, giving them aid and comfort.
3. The fact that a citizen is cruising in an enemy's ship, with a design to capture or destroy American ships, would be an adhering to the enemies of the United States. 4 State Tr. 328 ; Salk. 634; 2 Gilb. Ev. by Lofft, 798.
4. If war be actually levied, that is, a body of men be actually assembled for the purpose of effecting by force a treasonable enterprise, all those who perform any part, however minute, or however remote from the scene of action, and who are leagued in the general conspiracy are to be considered as traitors. 4 Cranch. 126.
To give aid and comfort would be to help, support, assistance, countenance, encouragement.
Would it be considered an act of treason if you told an enemy that their actions of war were justified because of actions that were taken against their ancestors seven to ten centuries ago?
Would it be an act of treason if you released to the enemy members of their high command who were prisoners of war in exchange for a known deserter?
Would it be an act of treason if you took actions to weaken the position of the United States knowing it would enable the enemy to gain strength by enabling it to operate unimpeded?
Would it be an act of treason if you enabled a declared enemy to gain destructive weapons by receiving immediate large amounts of cash and removing all obstacles, including inspection, in the development of the weapons?
Would it be an act of war if you used your influence to stop or limit allies from carrying out strikes against a common enemy when the enemy had committed egregious atrocities against the citizens of the ally?
Would you and should you be considered at traitor and tried for treason if you had committed all of the above and even more acts like these in favor of the enemy?
Just one of the above acts would be considered justification for being tried for and found guilty of treason.