(CNN) Former Vice President Joe Biden says he now backs Massachusetts Sen. Elizabeth Warren's bankruptcy plan, endorsing his former Democratic rival's proposal to repeal portions of a law they had clashed over 15 years earlier.

Biden touted his support for Warren's plan as an olive branch to supporters of Vermont Sen. Bernie Sanders in a virtual town hall for Illinois voters Friday night, calling it "one of the things that I think Bernie and I will agree on."

He highlighted a portion of Warren's plan that would allow student loan debt to be eliminated in bankruptcy just like other debts.

"I'm going to endorse -- I've endorsed -- Elizabeth Warren's bankruptcy proposal, which in fact goes further, allows for student debt to be relieved in bankruptcy, provides for a whole range of other issues that allows us to in fact impact on how people are dealing with their circumstances," Biden said. "So there's a whole range of things we agree on."

Biden's move to back Warren's plan shows that, as he moves toward clinching the Democratic presidential nomination and seeks to soothe over tensions from a year-long intra-party battle, the former vice president is taking steps to embrace his former rivals and adopt planks of their platforms -- and is willing to move left to do so.

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