In a democracy, the highest determinant of government behavior should be the will of the people.
While the administrative branch might have been given the power to act on impulse in rare timely instances of perceived immediate threat, i.e. The War Powers Act, humanitarian intervention, the window of immediacy has been closed and the will of the people has been expressed in no uncertain terms.
It is now incumbent on the executive and the legislative bodies to follow the will of the people. Discussions and decisions on Syria ought to occur with that priority given the highest consideration. As much as we all are sickened and repulsed by the use of chemicals in Syria, our response to it ought not risk our behaving outside our democratic principles and protocol after the window of immediacy has been closed.
Both the executive and the legislative branch ought to behave in accordance with the will of the people at this stage of the Syrian dilemma.