President Obama will wait until after a nuclear deal with Iran is made to make the case to the American people that it's the right thing to do. He made the comment today after being asked about this letter from nearly 50 U.S. senators to Iran, which stated, "The next president could revoke such an executive agreement with the stroke of a pen and future Congresses could modify the terms of the agreement at any time." A member of the press asked Obama, "Can you comment on the Republican letter to Iran? Can you comment on that?" "I think it's...