Joe Biden awkwardly fumbled with notes in his suit jacket pocket to answer a reporter's question on something he was briefed on just moments before – as the former White House physician to Donald Trump insists the president take a cognitive test. 'With the most recent hack by the Russians, would you say that this means –' a reporter began asking Biden as he checked out from King Orchards farm store in Central Lake, Michigan on Saturday. The 78-year-old president, however, cut off the reporter, saying U.S. intelligence is not sure if the hack came from the Kremlin. 'We're not...