 Donald Trump is said to be considering a 60% tariff on Chinese imports if he's elected in November. Economists at UBS say that would slice 2.5 percentage points from China's annual growth rate. That drag would come from a drop in exports, but also a hit to consumption and investment. The forecast is based on an assumption that some trade would go to other countries, that China doesn't retaliate, and that other countries don't join the U.S. position.