But two posters here do suggest a two-citizen-parent requirement. Namely, safisoft in the first two posts, and bvw in the last one.
Now bvw's is interesting because less than two weeks earlier, on June 26, 2008, he'd specifically defined 'natural born citizen' in a post, and made no hint whatsoever about such a parental-citizenship requirement:
"The issue for me is not Obama's birth. His mother was born and has remained a US citizen, as I understand that makes Obama a natural born citizen, no matter where she might have birthed him."I found one post inbetween those dates that I think was likely misinterpreted to prompt this change. I'll see if I can find it again.
In any case, what both safisoft's and bvw's posts have in common is that nobody else backed them up on these interpretations. The 'two-citizen-parent' claim was either ignored or rebutted. Other posters didn't adopt the view because other posters, at the time, recognized that the argument was wrong.
And like I said before, I was open to the possibility that lone individuals might have tossed out the argument prior to November. You've demonstrated that that was indeed the case, and I thank you for it. If anything, it shows that Donofrio didn't necessarily make the argument up out of thin air, and maybe copied it from someone online.* But at the same time, the universal negative-to-silent response to it also bolsters the main thrust of my hypothesis: that the 'two-citizen-parent' argument simply was not taken seriously before Donofrio employed it.
(*I think I mentioned before that Berg stole most of the claims in his complaint from comments online. And in several instances, Berg's use of those claims is what caused them to gain popularity among Birthers. For instance, you will find very few references to 'Mombasa' as a supposed place of birth prior to Berg's filing date in August 2008. A couple of sites mentioned it, having seen the same source Berg eventually used, but it was Berg that cemented Mombasa in the birther mythos.)
Did you lurk on FR before you ever posted your first reply or did you just jump right in and start making replies?