For those who accuse Pelosi of treason, what is your legal argument?

Your point is well-taken. While I don't agree with Speaker Pelosi's trip to Syria, she had every right to do so. I even agree with the spirit in which she went over there. However, I do believe that there are certain protocols that normally must be followed, and it sets a dangerous precedent when the legislative branch and the executive branch don't present a unified front to the rest of the world. I think that Speaker Pelosi has the best of intentions. Obviously, even the most ardent Bush supporter will have to admit that his foreign policy hasn't been very successful. I think the WAY that Speaker Pelosi went about what she was intending to do might have harmed us more than helped us, long-term. Only history will be able to judge that accurately.