Clinton, Bush, Obama and Biden talk America ahead of 250th birthday

Each of the four living former U.S. presidents said they had hope for America on the eve of its 250th birthday.

Former Presidents Bill Clinton, George W. Bush, Barack Obama and Joe Biden gathered in Philadelphia for a History Channel event featuring the group of "formers," where they later sat for an interview with "Today" host Jenna Bush Hager, the daughter of the 43rd president.

Her father noted in his interview that "it can be boring" when all the presidents gather, but there is "great camaraderie, because we all share something special."...