Presidents historically have at least paid lip service to the idea that they are supposed to consult Congress before launching a military action. While it’s usually obvious they will proceed anyway, they have nonetheless made the effort, if only to obtain the political cover they might need should things not go as planned. In the case of Donald Trump’s current misadventure in Iran, it’s becoming clear there was no plan — and since the president feels he is owed support for anything he does, he didn’t even bother with the niceties.
Since Vietnam at least, this dynamic has tended to put Democrats in a bind more often than Republicans. The reason for that is simple: The GOP has traditionally been unified in its zeal to go to war, while Democrats have been more divided. For a couple of decades, this caused Democratic presidential aspirants to twist themselves into pretzels trying to find a sweet spot between the party’s anti-war base and its more hawkish minority.
