The Biden administration is in the process of putting in place a rule one manufacturing leader says could kill off a million manufacturing jobs. Jay Timmons, president and CEO of the National Association of Manufacturers, made his prediction in an advance copy of his annual state of manufacturing address, according to Fox Business. The remarks said that while Biden claims to support manufacturers, “what he won’t tell you is that his federal agencies are, at this very moment, working to undermine his manufacturing legacy — those agencies are undermining your success. “In fact, just two weeks a…