“In actual history, Wallace was bought off by being made Secretary of the Treasury”
Edward J Flynn, boss of the Bronx, and also DNC chaiman, travelled to Yalta with Roosevelt, and observed that he was dying. Flynn got together with his fellow Democratic bosses in a traditional smoke filled room, and together they picked Harry S Truman to be the next VP, and successor to the ailing President. Truman wasn’t eager for the job, but finally agreed to take it. President Truman eventually fired Commerce Secretary Wallace, who then ran against him in 1948 as a Progressive. In 1952 Henry Wallace published “Where I was Wrong”, in which he admitted being a dupe of Stalin. Wallace was a misguided patriot, not a traitor.
It's actions, not motivation, that makes one a traitor.
Treason against the United States shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort. No Person shall be convicted of Treason unless on the Testimony of two Witnesses to the same overt Act, or on Confession in open Court.
Art. III Sec. 3, Constitution for the United States