Biden was upset, she writes in her new memoir, accusing her of speaking poorly about him to donors, but Harris was left wondering why then, moments before she was to take on Trump.

Former White House chief of staff Jeff Zients is sitting down with the House Oversight Committee to talk former President Joe Biden's mental acuity and autopen use during his final years in office.

Joe Biden’s own chief of staff called for him to undergo a cognitive assessment following his disastrous debate performance against Donald Trump, it has been reported.