Elizabeth Warren's new role: Key Joe Biden policy adviser
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FILE - In this Feb. 19, 2020, file photo guests watch Democratic presidential candidates, Sen. Elizabeth Warren, D-Mass., and former Vice President Joe Biden speak on a big screen during a Democratic presidential primary debate in Las Vegas, hosted by NBC News and MSNBC. Warren, a Massachusetts senator and leading progressive, has become an unlikely confidant and adviser to Biden, the presumptive Democratic presidential nominee. They talk every 10 days or so, according to aides to both politicians who requested anonymity to describe their relationship. (AP Photo/John Locher, File)