China is the biggest target for Trump so far, with 11.7% of the total goods going between the two countries subject to tariffs.
Trump has also threatened to hit another $400 billion worth of Chinese goods with tariffs due to their retaliation. China accused the president of starting the "largest trade war in economic history." While that claim may be a slight exaggeration now, it may come true in time.
The fight with Canada is the second-largest front in the trade battle, with 4.5% of total trade with the US subject to tariffs. Canadian Prime Minister Justin Trudeau has called the tariffs "insulting."
Just 1.5% of the total trade between the US and EU is subject to tariffs, and 1.1% of trade between the US and Mexico.
For the EU, Canada, and Mexico, the amount of trade subject to tariffs would increase dramatically if Trump follows through on his threat to place tariffs on imports of cars and auto parts.