 President Biden's exclusive TV interview with ABC's George Stephanopoulos asked if he's mentally fit to be president. Are you sure you're being honest with yourself when you say you have the mental and physical capacity to serve another four years? Yes, I am, because, George, the last thing I want to do is not be able to meet that. Rejecting the idea of taking a cognitive test, the president plans to visit several key battleground states this weekend. Daria Albinger, ABC News, New York.