a personally hurtful comment and called on the vice president to apologize. booker says he's grateful the apology came. listen to what he had to say. >> i felt just grateful he is speaking to his past with candor and regret for some of the things he supported. none of us are perfect. we all made mistakes. we need the courage to show vulnerability. >> reporter: biden talked about his support for the crime bill, talking about what went right and wrong with that bill. he faced criticism from his rivals and other credits, who said that led incarcerati incarceration. he is going to continue his tour today. he has events in charleston, as he tries to court the black vote. black voters make up the majority of the democratic