Tariffs are Trump's weapon of choice in on-again, off-again trade wars with Colombia, Canada, Mexico, China, importers of cars, importers of steel and aluminum

Some proposals have taken effect while others are on ice during negotiations.Here’s where things stand:Canada and MexicoA 25% import tariff on goods from Mexico and Canada took effect March 4, with an exception for energy products and potash,

Earlier today, Trump shared on social media that he would put a 200% tariff on European alcohol, in response to the EU's retaliatory tariffs on American whiskey. Trump has also directly touched upon Canada during his Oval Office meeting with Nato's Secretary-General.