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. Bill Ayers is a stone cold Traitor, by definition. Obama is right behind him, not having openly levied war against the United States. But it does say "or".