CNN’s Jake Tapper is the co-author of a new book detailing the lengths to which the Biden administration and its allies engaged in a “cover-up” of Joe Biden’s cognitive decline — even though the anchor himself dismissed concerns about the then-president’s age.

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.