The New York Times weighs in today with a checkup on the presidential tickets' medical histories. Barack Obama and Joe Biden check out, more or less, with a clean bill of health. (The Times' classifies Obama's "difficulty in stopping smoking" as "a notable medical problem." Thankfully, he seems to be chewing Nicorette.). Questions remain about the GOP ticket, however, due mostly to noncooperation. John McCain released 1,200 pages of medical records last May, but has refused to clarify further questions. Okay, so we can understand why the McCain campaign would be reluctant to discuss the health of a 72-year old, cancer-surviving nominee with a 1,200 page dossier. But why, exactly, has Sarah Palin refused to release her records? What's she hiding--frostbite?