 Donald Trump rained insults on the man who succeeded him in the White House, labelling Joe Biden the worst president in American history and accusing him of destroying the country with his economic and immigration policies. Mr Biden, for his part, took issue with Donald Trump's treatment of women, accusing him of having the morals of an alley cat. This was a worrying night for the Democrats and calls are already mounting for Joe Biden to step aside as his party's presidential candidate.