 I'm Debra Rodriguez. President Biden steps into the spotlight a day after the White House dealt with reporters' questions about a neurologist's visit to the White House and whether they had anything to do with fears of Parkinson's. Correspondent Nancy Cordes. Today, President Biden addresses foreign leaders at the NATO summit taking place here in Washington, D.C. And on Thursday, he's going to hold a rare press conference there, which will be another big test as he works to convince his party and the public that he's fit to run for