"Bernie is speaking to a yearning that is deep and real. And he has credibility on it," Biden told CNN on Monday.
When asked how Sanders' chief opponent, former Secretary of State Hillary Clinton, was faring on the issue, Biden responded: "It's relatively new for Hillary to talk about that," adding that she has "come forward with some really thoughtful approaches to deal with the issue."
Biden clarified his position in an interview with Today on Tuesday, saying that much of Clinton's focus has been on issues of foreign policy.
Biden praises Sanders on income inequality
Vice President Joe Biden offered effusive praise for Democratic presidential candidate Sen. Bernie Sanders Monday, lauding Hillary Clinton's chief rival for doing a "heck of a job" on the campaign trail and praising Sanders for offering an authentic voice on income inequality. http://cnn.it/1ZXzyFpPosted by CNN on Monday, January 11, 2016
Biden also said it was possible for GOP front-runner Donald Trump to win the White House.
Biden said he hopes Trump gets "a lot more serious about the issues."
"I think he is divisive,'' Biden said. "I think he'd have to acknowledge that he's very divisive. That's not healthy. We always do best when we act as one America. We always do best when we appeal to our better angels, and we always do poorly when we appeal to our fears and our differences."