Actually, I believe that O’s people have been surreptitiously bringing it up all along whenever things get too hot for “the one” to throw people off his agenda, ties to Soros, etc.
The DNC has all but admitted that it plans to use the “Birther” tag to muddy the waters in the 2010 elections.
0’s people have not been bringing it up; for instance on FR valuable, longterm and trustworthy freepers have been digging and researching untold hours and posting info since at least summer 2008. Gradually 0bots have appeared - more and more of late - to demean, discredit, smear and lie in support of their boyo.
I don’t think you can find a single example of any 0bot or 0-hireling bringing this topic up - until now. Because they know the shit is starting to hit the fan. The DNC effort is purely reactive since they know more and more people are learning about this.
It’s crystal clear to me; but then I’ve been studying this almost obsessively for a year and a half. I don’t do any useful research like so many here, but I read and learn.