 ABC News. I'm Richard Cantu. President Biden's physician released a letter Monday night aimed at answering reporters' questions about a Parkinson's disease specialist who visited the White House eight times in eight months. Dr. Kevin O'Connor, the chief executive's physician, said Dr. Kevin Kennard examined President Biden for his annual physicals. O'Connor says exam results were made public each time and there's no signs of Parkinson's. Dr. O'Connor says Dr. Kennard and the president's