DETROIT (Reuters) - General Motors Co and the United Auto Workers union have reached a tentative deal for a new four-year labour deal, moving the sides closer to ending the month-long strike by about 48,000 hourly workers that had drawn the attention of U.S. President Donald Trump and potential Democratic rivals in the 2020 presidential election. The deal is subject to approval by the union's national GM council during its meeting on Thursday and then must still be ratified by the wider..