Former President Joe Biden and former first lady Jill Biden are weighing a $30 million tell-all book deal that would likely include details from the diary Jill kept during her time at the White House, The Daily Mail reported. “She could write a very explosive book if she wanted to,” a former White House aide told the outlet. The joint book deal is contingent on Jill, whom experts say could be worth $15 million on her own, according to the report. However, Jill would likely be required to reveal details surrounding her husband’s declining mental health, as well as his...