Donald Trump continues attack on Kamala Harris, calling Joe Biden's running mate 'a big failure'

President Donald Trump has continued his attack on Joe Biden's running mate, Kamala Harris.

The US President told reporters that the Democratic Vice Presidential candidate was a "risky" pick, after she had insulted Joe Biden during the primary election season.

"I think she's going to be a big failure and I think I look forward to the debate between her and Mike Pence," he said.