@revelette1,
I imagine that he's since come out in favor of desegregation?
Unless Joe Biden in 2019 has stances that turn into deal breakers for me, I'm not going to be too beholden to a position taken 40+ years ago.
People's beliefs can change and often do from one's youth. For example, when I was in high school (20 years ago) I was against gay marriage, and really, thought gay's were disgusting. Then I met some gay people and learned that they're not all that different than any of us and my views changed.