Could President Donald Trump’s initiative to increase automotive manufacturing in the U.S. actually kill more jobs than it creates? By raising tariffs as high as 35% in a bid to force production to the U.S. from Mexico and Canada, the U.S. would increase costs, force new investment in plants and dampen sales by General Motors , Ford and Fiat Chrysler Automobiles . The CEOs of the three automakers met with the president for breakfast on Tuesday.