The 47 Senators who signed the open letter dated March 9, 2015 addressed to the Leaders of the Islamic Republic of Iran must be censured for violation of paragraph two of Section 2 or Article 2 of the Constitution. That Section provides the President and only the President “Power, by and with the Advice and Consent of the Senate, to make Treaties.” By going directly to the Leaders of the Islamic Republic of Iran these 47 violated their responsibility which is limited to providing advice and consent to the President. Their actions circumvented and undermined the power of the Presidency and violated the Constitution.
Why is this important?
I believe that the activities of the Republicans in the Senate warrants an investigation of treason, but let's start with censure and then file charges of treason against Senator Cotton and other ring leaders.