Biden secures enough delegates to clinch Democratic nomination
Joe Biden has now earned enough delegates to secure the Democratic nomination for president, after Tuesday's primary elections. Democrats will vote at the party's convention in August on naming Biden their official nominee. CBS News political correspondent Ed O'Keefe and CBSN political reporter Caitlin Huey-Burns joined CBSN to discuss how he got here, and what comes next in the former vice president's campaign.