Some members of former President Joe Biden’s Cabinet did not believe that he could be relied upon to perform at 2 a.m. during an emergency by the final year of his presidency, according to a new book from CNN’s Jake Tapper and Axios’ Alex Thompson.

The departing interim U.S. attorney for D.C. will become the U.S. pardon attorney and a member of a Justice Department group examining the actions of prosecutors during the Biden administration.