President Trump announced in a letter posted to social media on Saturday that he would place a 30 percent tariff on goods from the European Union, upending months of careful negotiations and further roiling what is one of the world’s most important economic relationships.

Mexico did not face a new tariff on April 2, the day of Trump's so-called "Liberation Day" tariff rollout. There remains a 25% tariff on non-USMCA-compliant goods from Canada and Mexico, as well as a 50% tariff on steel, aluminum and derivative products.

Whether his copper tariff will remain in place is a question given the number of times Trump has flip-flopped on tariffs of various kinds.

The president’s supporters portray him as a top dealmaker. But, at least for now, far more trading partners have gotten stiff tariffs than trade deals.

President Donald Trump extended his "Liberation Day" tariff pause and sent letters to trading partners announcing new tariff rates for Aug. 1.

President Donald Trump has managed to make his erratic trade policies even more baffling to countries desperate to negotiate an escape from his wrath.

The pause on the biggest of Trump's tariffs won't end this week, as planned, but the problems they present still loom large.