David Axelrod suggested on Sunday that discussions about Joe Biden's mental acuity should be set aside following the former president being diagnosed with cancer.

Rep. Steven Horsford, D-Nev., was one of the last people to see Biden before he left the race also isn’t mentioned in the book. At the time of calls for Biden to drop out, Horsford had been among one of the stronger voices in the state supporting Biden.

Former President Biden on Thursday denied accusations that his mental acuity took a slide toward the end of his presidency and called reporting that he was urged to drop out of the race over those

MSNBC's Joe Scarborough criticized then-Special Counsel Robert Hur for his report, which raised concerns about former President Biden's mental capabilities.

Joe Biden’s time in public office is now behind him, but his age and mental acuity have become a litmus test for the next leaders in his party