A new book accuses former President Joe Biden's inner circle of trying to hide his mental and physical decline. Alex Thompson, co-author of "Original Sin," sat down with CBS News chief Washington correspondent Major Garrett to discuss his reporting.

Jake Tapper and Alex Thompson's book has already generated a national debate about whether the White House deceived the public about the president's cognitive state and how Biden's late exit from the race undermined the Democratic Party's chances of stopping Trump.