In the first 50 days of his second term, President Trump’s penchant for imposing and then suspending tariffs has shaken markets and confounded trading partners.

Canada and Mexico A 25% import tariff on goods from Mexico and Canada took effect March 4, with an exception for energy products and potash, which received a 10% tariff. The next day, the Trump administration suspended those tariffs until April 2 for autos eligible for duty-free trade under the U.