Fraud, yes, but unless Berg lived in Illinois or contributed to his campaign, he would have no standing to pursue the lawsuit and it would be moot as to him. A lot of people might have such a claim again Obama but I don’t believe Berg could sustain it if his standing is based solely on being a U.S. citizen. Besides, if he loses such a case, I suspect he will be judgment-proof.
If it turns out that Obama really isn't a natural born citizen. I would bet he really never bothered to even be naturalized which would deprive him of his Senate seat.
This is just the kind of Maoist agitprop that would appeal to Ayers.