President Donald Trump posted the letters to country leaders — including of Japan and South Korea — on social media, informing them of the new rates. The White House expects about 14 letters to go out today.

Trump delayed the "reciprocal tariffs" in April, vowing to strike roughly 90 trade deals in 90 days. So far, the White House says it has reached trade agreements with only the United Kingdom and Vietnam, as well as a preliminary accord with China.