 President Biden's personal physician releasing a letter detailing his examinations of the president after more concerns have been raised over the president's mental acuity. Fox's Madeline Rivera has more on just what that letter said. The president's physician, Dr. Kevin O'Connor, identifies the Parkinson's expert as Dr. Kevin Kennard. Kennard has been the neurology consultant at the White House Medical Unit since 2012. O'Connor says Kennard examined the president for each of his animal physicals.