 The US President Joe Biden's used social media to attack Donald Trump's acceptance speech at the Republican National Convention as calls grow for the President not to seek re-election. Mr Biden's been isolating at home while recovering from Covid. At the same time, calls are growing for him not to seek re-election, with concerns mounting about his health and mental acuity. Speaking to the BBC, the Democrat Congressman Adam Smith said he thought Vice President Kamala Harris would be the right candidate.