a book that you're ready to share with the world? get published now, call for your free publisher kit today! welcome back to "state of the union." i'm jake tapper. in a major speech yesterday, former vice president joe biden attempted to defend his record saying he's changed since the 1970s and that he was vetted and selected by president obama. that defense comes after weeks of criticism from his democratic opponents who are suggesting the former vice president is out of touch on issues such as race. the vice president spoke exclusively with my colleague chris cuomo and tried to explain his position on voluntary school busing in the 1970s. >> if busing didn't work then it made sense you weren't for it back then. but why say you were for it? why not just be straight about it and move on. >> because there are three different pieces. i w i was -- i was for voluntary