Trump has stated that he will impose a “unified tariff” of 15% or 20% on countries that have not received the tariff notice.

On July 10th, local time, President Trump of the United States stated in a telephone interview with American media that he plans to impose a unified tariff of 15% or 20% on almost all trade partners who have not yet been subject to tariffs.
Trump said, “We will impose tariffs on all remaining countries, whether at 15% or 20%, and we are arranging this.”
This week, Trump had sent tariff letters to several countries including South Korea and Japan, announcing that from August 1st, tariffs would be imposed on copper imported into the United States at 50%. (News)
Trump’s tariff policy has impacted the global economy.