Joe Biden has accused Democratic rival Bernie Sanders of “joining Trump” after both the Vermont senator and a Republican Party official criticised the former vice president’s heated exchange with an autoworker.While visiting the Fiat-Chrysler car plant in Detroit on the day he and Mr Sanders look to win support from voters in six states, including Michigan, Mr Biden snapped at a worker who told him he was opposed to the 2nd Amendment, that part of the US constitution gun rights advocates claim gives them the right to bear arms.
