Enlarge / California Governor Gavin Newsom, seen speaking to reporters after September's presidential debate. (credit: Getty Images) California Governor Gavin Newsom has vetoed SB-1047, a controversial artificial intelligence regulation that would have required the makers of large AI models to impose safety tests and kill switches to prevent potential "critical harms." In a statement announcing the veto on Sunday evening, Newsom suggested the bill's specific interest in model size was misplaced.