Trump has started a Trade War, imposing steel and aluminum tariffs all over the world.

Mexico plans to impose retaliatory tariffs on American steel, pork, apples, grapes, and cheese, among other things. The New York Times said the goods were chosen to have an impact on rural Republican congressional districts in the hopes of applying pressure to Trump's political allies.

According to The Wall Street Journal, the European response will target some $3.3 billion in U.S. exports. American agricultural exports are likely to take the biggest hit, which is bad news for farmers who depend on export markets because America literally grows more food than it can consume

I didn't see what China's will be targeting. I think they are suffering from whiplash from his on/off trade war with them. Japan also targeted.