Joe Biden joins the Harris campaign in the ‘battle’ for Pennsylvania

Former White House chief of staff Mick Mulvaney discusses US President Joe Biden joining Vice President Kamala Harris at her rally in the must-win state of Pennsylvania. “This is effectively Joe Biden’s home state; he is from there even though he represented a nearby much smaller state, Delaware, in the Senate,” Mr Mulvaney said. “When they are on the ground in Pennsylvania, that means that's where the battle is.”