The deadline for the duties to go into effect are still three weeks, which may mean the announcements could be a negotiating move.

While Mexico was spared from Trump's so-called "Liberation Day" tariff rollout on April 2, the 30% rate for the E.U. is 10% higher than what the president said he would apply to America's largest trading partner in April.

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 on Saturday targeted Mexico and the European Union with steep 30 percent tariffs, dramatically raising the stakes in already tense negotiations with two of the largest US

The White House concluded that non-tariff methods for punishing Brazil would take too long, two people familiar with the situation said.

Shares of industrial and transportation companies ticked up as traders took President Trump's latest tariff threats with a pinch of salt. It has become an article of faith among stock traders that President Trump's bark is worse than his bite on tariffs.