Jake Tapper, CNN anchor and co-author of the new book Original Sin, detailing the alleged “cover-up” of the true depths of Joe Biden’s cognitive decline, has told Bill Maher that the former president should share some of the blame for his own downfall.

Tapper's book, co-authored by Alex Thompson, describes a president who struggled to function: "One person told us that the presidency was, at best, a five-person board with Joe Biden as chairman."

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.