Treason is the aiding and abetting of the enemy. Not expressing disagreement with the policy or actions of the central government.
Is it treason to protest the central governments treatment of civilians at Ruby Ridge and Waco? How about the bombing in Kosovo, which I protested every day of that fiasco? Do you think that just because the President is a Republican he is ALWAYS right?
(humor) "Perhaps ve should check your papers, VERRY carefully to make sure you are who you say you are, comrade." (/humor)