IMO, the reason this wasn't touched in 2008 or 2009 comes down to the touchy subject of race. It's not about the subject matter at hand. It's about the color of his skin and this country's history re: that.
NOBODY was going to "deny" the first "black" president (even though he's more white and arabic than black). Especially when he enjoyed high "approval" ratings. No way, no how.
Remember though, it took over 2 years for Nixon to be brought down by the cover-up.
So, who knows now that his poll numbers are in the toilet and the Tea Partier's are starting to affect Congressional races.
But not by anyone entitled to bring a challenge under state election laws.
Yep, reparations via electing a half black POTUS (not to mention a lot of white guilt)