Despite Tapper's previous defense of Biden, he was among one of the most vocal critics of the president's decision to seek reelection in the wake of the June 27 presidential debate. Tapper was the co-moderator of the only debate that took place between Biden and Trump last year.

His new book, “ Original Sin: President Biden’s Decline, Its Cover-Up, and His Disastrous Choice to Run Again ,” co-authored with Axios correspondent Alex Thompson, promises to be “an unflinching and explosive reckoning with… Joe Biden’s run for re-election despite evidence of his serious decline.” It is set to be released May 20th.