President Trump has threatened to hit more than a dozen nations with steep import duties by next month. Mr. Trump initially posted two nearly identical letters on Monday, addressed to Japanese Prime Minister Shigeru Ishiba and South Korean President Lee Jae-myung,

President Donald Trump is spamming world leaders with letters threatening massive tariff hikes if they don’t strike trade deals with Washington as the U.S. blows past its own 90-day deadline for deals with 90 countries. As the letters multiply, it turns out they are partially copy-and-pasted.