They can take Estonia (and they will if “western” leaders go on with their impotence) within 24h, NATO will not even release a press statement before it's all over and then goes “but we shouldn't start WW3 over that” crowd fueled up by FSB agents. There are no plans to defend Baltic states in case of invasion, not even plans. Fix it immediately or shut it down.
I'd go with the shut it down option, the US needs to learn to let European nations make their own decisions, and butt out.