President Joe Biden on Saturday slammed billionaire Elon Musk and former President Donald Trump‘s rampage against ‘illegal’ immigrants, saying that Musk himself was an illegal worker when he initially came to the U.S. What Happened: “Well, that wealthiest man in the world turned out to be an illegal worker here when he was here,” Biden said, referring to Musk as a Trump “ally” at an event in Pittsburgh, Pennsylvania. “He was supposed to be in school when he came on a student visa. He wasn’t in school. He was violating the law.” Biden was referring to a report from the Washington Post which sai…