Biden insists he can reunite US as high-profile Democrats reportedly want him to quit race

President hits trail in Pennsylvania as virtual lawmaker meeting with Hakeem Jeffries shows growing party doubt

Joe Biden insisted he was the person to reunite America in a second term in the White House and was up for the job" as he hit the trail in Pennsylvania on Sunday - but the number of high-profile Democrats doubting his position as the presumptive party nominee only grew amid a campaign in crisis.

Pressure on the US president increased even further following his poor debate performance against Donald Trump last month and an underwhelming ABC interview last week, as a group of Democratic representatives met online with House minority leader Hakeem Jeffries on Sunday.