Former Democratic presidential candidate Michael Bloomberg this week urged ex-rival President Joe Biden to stand up to teachers unions who are fighting attempts to resume in-person learning. “I think what we’re doing to poor kids is a disgrace,” Bloomberg, a three-term mayor of New York City, said on MSNBC’s “Live with Stephanie Ruhle.” “These poor kids are not in school, they will never recover from this—and they had a bad education experience anyways. We have not had good schools for poor kids and this now is just so much worse. The president has to stand up to the unions.” “Teachers say, ‘Well, I don’t want to go back because it’s dangerous.’ We have a lot of city and state and federal employees who run risks—that’s part of the job,” he added. “You run risks to help America, to help your state, to help your city, to help your family, and …