Stocks were mixed in early trading on Monday after President Donald Trump over the weekend issued 30% tariffs on the European Union and Mexico, rekindling tensions with two of the largest U.S. trade partners and threatening to raise consumer prices.

U.S. President Donald Trump announced on Saturday a 30% tariff rate for goods imported from the European Union and Mexico, starting on August 1.

U.S. stock index futures slipped on Monday, as President Donald Trump's fresh tariff threats targeting the European Union and Mexico dampened investor sentiment ahead of a week packed with economic da...