US stock futures fell as President Trump threatened stiff tariffs on imports from more than a dozen countries and delayed the return of sweeping April levies.

President Trump plans to issue an executive order to extend the pause on his steep, so-called reciprocal tariffs to Aug. 1, White House press secretary Karoline Leavitt said Monday. The pause had been set to expire Wednesday.

Last week, the Trump administration announced that it reached a deal with Vietnam that would allow U.S. goods to enter the country duty-free, while Vietnamese exports to the U.S. would face a 20% levy. That was a decline from the 46% tax on Vietnamese imports he proposed in April.

The United States is close to finalizing several trade pacts in coming days and will notify other countries of higher tariff rates by July 9, President Donald Trump said on Sunday, with the higher rates set to take effect on August 1.