Obama didn’t need to because the MSM completely ignored the gaffe, as they do all his gaffes. Had Brian Williams, and other MSM slimeballs gone on national tv and ridiculed Obama for the gaffe you can bet Obama would have attempted to clear it up. But Obama knows the mainstream press will gleefully fellate him 24/7, so he can just lay low and let these things pass.
Eggs- acckley...:oP
If the Birthers spent all of their time sticking up for Trump, his campaign money to democrats, his gaffes and everything else Trump had said in the past, Obama never would have had to come out with a newly released fake Birth Certificate, now would he?
Best to focus on Obama (NOT the "gaffes" of your own candidate).