Hours earlier Trump told reporters that he wanted Ukraine and China to investigate Biden and his son, businessman Hunter Biden, a public request echoing the appeal he made in a phone call on July 25 with Ukrainian President Volodymyr Zelenskiy that led to an impeachment inquiry by the House of Representatives.
"Now, with his administration in free-fall, Donald Trump is flailing and melting down on national television," Biden's deputy campaign manager Kate Bedingfield said in a statement.