Biden refuses to back down and battles for political future

As millions of Americans celebrate their Independence Day, Joe Biden is battling for his political future.

Panic is growing among the Democrats following his disastrous debate performance.

He’s admitted that he “screwed up”. But he also insists he is not stepping aside, despite talk among Democrats turning to whether Vice President Kamala Harris should replace him in the November election.

Donald Trump’s campaign is already moving to discredit her.