ABC News' Jonathan Karl reports in "Retribution: Donald Trump and the Campaign That Changed America," out next Tuesday, that Hunter Biden was furious with former President Obama for taking President Biden's hand to lead him off the stage at a Hollywood fundraiser last year.

Why it matters: The snippet went viral, reinforcing the impression that Biden was doddering.

Behind the scenes: "I almost jumped up on the stage and said, 'Don't ever f--king do that to the president of the United States again — ever," Hunter Biden, still furious months later, told Karl in one of their extensive interviews. • The younger Biden insisted his dad was simply taking some time to acknowledge the crowd. "I knew that that was going to be a meme," Hunter recalled. "That really, really, really, really pissed

See Full Page