Former President Joe Biden took a shot at the authors of a new book that details his alleged cognitive decline during his time in office.

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.

Biden said he had no regrets about his decision to seek reelection and was optimistic about his recent cancer diagnosis.