> If he starts firing shots again the war is illegal. The 60 day window is over. He has no appropriated money to fight the war, no public support, and no way out.

There's at least two other belligerents in this war who get a say, as well as a large number of other countries which count as victims (everyone from Lebanon to UAE). No US decision can stop Israel and Iran from fighting.

He has operational control of the armed forces. This has never been disputed recently; he can order whatever shots he wants. The armed forces funding is in one whole pot which is guaranteed even against a "shutdown". He also has total legal immunity for official acts.