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 was -- i was for voluntary busing. number one. i was in support where the court showed that in fact a legislative body took an action preventing black folks from going to a school. that is du jour -- de-jure segregation. i know you know. that is the desegregation and 50 years ago people don't understand the context. the third one is do you have an administration through their non-elected officials department of housing decide every school should be equally balanced across the board. that is a different issue. and the way to deal with that problem is what i did from the time i was a kid. i got out of -- i got out of law school and became a public