New book reveals Biden's inner circle worried about his age years before botched debate performance

A new book about President Joe Biden's cognitive decline and his administration's alleged cover-up has forced a reckoning in the Democratic Party. 

Biden's aides worried about his age long before his consequential 2024 presidential debate against then-former President Donald Trump, CNN anchor Jake Tapper and Axios political correspondent Alex Thompson reveal in their book, "Original Sin: President Biden’s Decline, Its Cover-Up, and His Disastrous Choice to Run Again," which was released on Tuesday.