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Elon Musk’s ongoing attempted takeover of the federal government’s infrastructure wasn’t the only major political news over the weekend. President Donald Trump also started a trade war with America’s top three trading partners — and now we get to find out how much havoc that is going to wreak. On Saturday, Trump ordered new 25 percent tariffs on all goods imported from Canada and Mexico, but a lower 10 percent tariff on Canadian energy imports, and a 10 percent tariff on goods from China, all starting on Tuesday. Canada and Mexico quickly responded with their own threats, and it’s not yet clear how China will retaliate. And Trump says the European Union could be next. Below are some of the big questions and answers on the tariffs and their impact, as well as live updates, commentary, and analysis as the opening of Trump’s trade war plays out.