President Donald Trump on Saturday threatened duties of 30% on products from Mexico and the European Union, two of America’s biggest trading partners, in an ongoing tariff campaign that’s upended global trade since he retook office in January.

U.S. President Donald Trump said he believed Britain would fight to defend the United States but suggested he could not say the same for the European Union, a factor in his decision not to sign a tra...

"It will be almost impossible to continue the trading as we are used to in a transatlantic relationship," EU trade chief Maros Sefcovic said of the 30% rate before meeting ministers and officials of ...