From TODAY.

In a TODAY exclusive, Former President Joe Biden shares with Jenna Bush Hager that his life journey to becoming president is "kind of the story of what America is all about."

TODAY’s Jenna Bush Hager spoke to all four living former presidents of the United States ahead of America’s 250th anniversary in July. The former presidents gathered in Philadelphia for a History Channel event called History Talks, held in partnership with Comcast, our corporate parent.