Sen. Kamala Harris has been a vocal critic of former Vice President Joe Biden's position on busing in the 1970s — but Biden says the two actually share the same opinions on the issue.
They're currently debating the issue.
"Had those segregationists had their way, I would not be a member of the United States senate, Cory booker would not be a member of the United States senate and president Obama would not have been in a position to nominate him to the place he holds," Harris said.
Some background on what busing means: The 1954 US Supreme Court ruling in Brown v. Board of Education brought an end to legal racial segregation in schools. But because of demographic trends, white flight to the suburbs and discriminatory housing practices like redlining, many neighborhoods across the country remained segregated. Combined with how cities drew school district lines, that meant schools remained segregated, too.
After the 1971 Supreme Court ruling in Swann v. Charlotte-Mecklenburg Board of Education, lower courts began mandating busing to effectively desegregate schools. Black students started taking school buses to majority-white schools and white students to majority-black schools, often in neighborhoods far from where they lived
It became one of the most controversial topics in US politics. Supporters of busing argued that the practice was necessary to effectively integrate schools — and help correct the damaging legacy of school segregation.
But opponents of busing, many of whom were also opponents of school desegregation, argued that children were being transported to unsafe neighborhoods, and they objected to the long commutes children experienced. Others, including then-Sen. Biden, said that busing forced schools to fulfill racial quotas and did not achieve equal opportunity for students.
Watch the moment: