She immediately follows by asking whether NPR should also address questions about whether the world is flat.
So . . . she's comparing people who question whether Obama was born in Hawai'i to people who argue that the world is flat and using that as a reason why NPR doesn't cover the (as she calls them) 'birthers.'
I believe WND is spinning her statements.
I was reading it as she is saying "the fact" is that there is still a question about the President's eligibility. And then "the challenge" is to question these "facts"... that part is unclear but interpretted maybe she's saying that it's no longer opinions (or motives) that we have to debate, but we have to find out what facts are shaping these opinions... (?)
I'm not sure. The first part makes sense until she gets to the second part.