Rick Perry is still discussing President Obama's birth certificate. From an interview in The New York Times:
Q. Why did you choose to keep the birther issue alive?A. It’s a good issue to keep alive. You know, Donald [Trump] has got to have some fun. It’s fun to poke him a little bit and say “Hey, let’s see your grades and your birth certificate.” I don’t have a clue about where the president — and what this birth certificate says. But it’s also a great distraction. I’m not distracted by it.
