Gov. Palin will keep talking about the other issues because it is more productive for her to do so. If the BC issue blows up on 0bama, then she won't have to do a thing, and it keeps her out of the fray. It's a wise move.
Hypothetical question for you: In 2010, it is discovered that Obama’s birth certificate is fake and he was born in Kenya. What happens then? Do you think Congress will create a Constitutional Crisis to remove him from office?
“If the BC issue blows up on 0bama....”
.
It’ll never happen unless there are people who continually push for this issue. And don’t expect our cowardly Congress to get involved.