 Fox News. I'm Therese Crowley. The White House producing a letter from President Biden's physician after the White House visitors log showed a neurologist specializing in Parkinson's visited the White House residence eight times in eight months. The doctor's letter insists Biden has not seen a neurologist outside his physicals. President Biden rejecting calls to withdraw from the presidential race as he prepares to host the NATO summit in D.C. Candidate Donald Trump tells Fox's Hannity. You know, it looks