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.

He's been president of the United States for less than two months, but Donald Trump has already rolled out hefty import taxes on his biggest trading partners. Here's a timeline of the trade war that started during his first term in office.

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.