Biden said he wants to triple funding for low-income schools and make preschool accessible from the age of three.
I was disturbed, watching the second Democratic debate, that the candidates apparently didn't get it that attacking one another will only benefit President Donald Trump.
"He´s the bully that I´ve always stood up to", Biden said.
But the veteran politician may now have hinted that he isn't the only candidate who deserves a grilling over previously held positions.
Harris was in New Orleans at the Essence festival, where she was among several 2020 White House candidates at the largest annual gathering of black women.
According to a RealClear Politics average of national polls, Biden now has the support of 26 percent of Democrats, with Harris next at 15 percent.
She took him to task for his opposition to federally mandated busing in the 1970s, a policy aimed at encouraging educational integration.
Former Vice President Joe Biden admitted this week that he "wasn't prepared" for Sen.
Biden was also asked by CNN how he would fare in a matchup with Trump.
Democratic presidential candidate Sen.
During the campaign, Biden has also been criticized for his role as chairman of the Senate Judiciary Committee during the Anita Hill hearings in 1991, and his support for the infamous 1994 crime bill which disproportionately affected black Americans.
Meanwhile, Biden admitted Friday he wasn't ready to be attacked on the busing issue by Harris during last week's Democratic debate.
BIDEN: Sure, they're going to come at me.
"I was prepared for them to come after me, but I wasn't prepared for the person coming at me the way she came at me", Biden told CNN host Chris Cuomo on Thursday, adding that he was surprised given his family's longstanding friendship with Harris. What I do know, and it's the good news and the bad news: "the American people think they know me, and they know me". They want to know what they're getting. It's not like somebody who just came out of the blue and didn't know anything.
He said he wouldn't attack rivals on their past.
"Was I wrong a few weeks ago to somehow give the impression to people that I was praising those men who I successfully opposed time and again?"
"I've been accused of being too aggressive", he said. He noted that despite disagreeing with them, he had managed to work with two white segregationists from the South serving in the Senate when he was first elected: Democratic Senators James Eastland of MS and Herman Talmadge of Georgia.
'I was for voluntary bussing, ' he said. I don't - anyway, I - but here's the deal. "And if I don't win, it'd be great to have a female president".
Democrats concerned about income and racial inequality in the United States have long pointed to the lasting effects of red-lining - and persistent gaps in the rates of black and white homeownership, a traditional means of building wealth. I talked about school districts should be consolidated in ways that made sense'.
CUOMO: Why didn't you fight it like this in the debate?
Biden blamed the 30 second time limit, which is the amount of time the candidates were allowed to respond.