President Joe Biden used an event marking the 10-year anniversary of the Martin Luther King, Jr. memorial to ridicule Republicans who polls show have concluded he is not their legitimate president. Biden bemoaned the 'something like 20 per cent of Republicans, half the Republicans' who think 'I am not your president. Donald Trump is still your president,' amid polling that shows large swaths of Republicans believe Trump's repeated claims that the 2020 election was fraudulent. 'As the Catholics say, "oh my God!"' he said, earning laughs. But much of his speech was deadly serious. Biden spoke at the memorial's site...