The S&P index had surged in December after Trump’s win on the expectation that the old-now-new-again president would pursue business-friendly policies. Yet the president’s constant threats of tariffs on foreign countries has also unnerved businesses.

American companies of all sizes are on edge over President Donald Trump’s tariffs, but it’s arguably small business that is most exposed. Many smaller firms say they’re having to hike prices, freeze expansion plans or absorb a hit to already-thin profit margins as import bills climb.

The administration of US President Donald Trump informed Mexican officials that they must impose their tariffs on Chinese imports. This would allow Mexico to avoid the tariffs that Trump has threatened,