 And he knows how to do the job, not because he says it, because his record proves it. Senator Bernie Sanders says he's not confident Biden can win reelection this fall, but like most Democrats in Congress, he says he does not want Biden to step aside. OSHA, the federal agency overseeing workplace safety, has proposed a new rule aimed at protecting workers from excessive heat. NPR's Andrea Hsu reports if adopted, it could apply to some 36 million U.S. workers.