U.S. President Joe Biden on Sunday called on the nation to lower the political temperature and work out differences at the ballot box rather than with bullets, a day after his predecessor and Republican rival Donald Trump survived an assassination attempt at a rally in Pennsylvania.In a rare prime-time speech from the Oval Office, Biden said that "the political record in this country has gotten very heated. It's time to cool it down. We all have a responsibility to do that," despite significant disagreements.Ahead of Biden's address, Trump arrived in Milwaukee for the Republican National Co…READ FULL ARTICLE