The Original Sin co-author discusses the former president’s decline and why it still matters amid Trump’s chaos.

The book alleges that Biden's inner circle orchestrated a comprehensive effort to obscure the president's deteriorating condition from the public.

Jake Tapper and Alex Thompson's book has already generated a national debate about whether the White House deceived the public about the president’s cognitive state and how Biden’s late exit from the race undermined the Democratic Party’s chances of stopping Trump.