again, bussing. taking the issue from the debate stage to iowa. live with more. this is very interesting what kamala harris is saying. >> that's right. it has been a week since that debate exchange over harris and biden over school bussing. now their campaigns are going at it over that issue. kamala harris was criticizing joe biden over his option to school bussing in the 1970s and now the biden campaign is taking issue over the response about whether she supported federally mandated bussing in cases of defacto segregation. >> bussing is a tool among many that should be considered when we address the issue which is a