I wonder if treating the Houthis as Iranian agents and retaliating against Iranian assets directly would be more effective than playing whack-a-mole against these missile launchers without addressing the source of the problem. I assume Biden's advisors are wondering the same thing, but it's hard to know where the line between deterrence and escalation is..

Iran has enemies. Many of them are even worse than the Iranians, but maybe the thing to do is to find some sympathetic group, arm them, and let them take the heat, just like Iran is doing with the Houthis...