Trump's renewed firmness on that deadline came after he posted a flurry of letters warning world leaders, threatening to impose tariffs similar to those he announced in April. On

U.S. trading partners are weighing responses after President Donald Trump’s latest action on tariffs sparked a stock market selloff Monday. The White House sent letters yesterday to about a dozen countries laying out the rates at which imports would be taxed—ranging from 25% to 40%—if no other trade agreements are reached.