US President Joe Biden and Vice President Kamala Harris made a joint stop at their 2024 campaign headquarters on February 3 to rally staff and supporters ahead of a challenging re-election bid that is likely to pit them against former President Donald Trump.The Democratic leaders and re-election candidates were joined by their respective spouses, first lady Jill Biden and second gentleman Doug Emhoff at the office in Wilmington, Delaware, which is near the Bidens' family home.Biden is expected to face Trump, the far-and-away frontrunner for the Republican presidential nomination in a rematch that Americans largely do not want.