Joe Biden’s former administration still has his back. BY: MEGA Joe Biden ‘s former administration continues to stick by his side, as top aide Annie Tomasini became the latest team member to plead the Fifth following questions about his mental health, Knewz.com can reveal. On Friday, July 18, Tomasini was called on to appear before the Republican-led House Oversight Committee for a closed-door interview all about Biden’s mental fitness and use of a presidential autopen while in the White House.