If the story is true in its particulars — keeping in mind both that Rep. Bachmann’s current staff denies that migraines incapacitate her and that one of the three examples given of her alleged incapacitation does not do much to support the claim — then it is absolutely a legitimate story. The problem in that case wouldn’t just be that she gets these migraines but that stress, apparently, brings them on. All else equal, that’s really not something we should want in the contemporary presidency. And it’s something voters should know about, in order to weigh it against such positives as her fearlessness, demonstrated commitment to repealing Obamacare, etc.