The Trump administration touted a new accord with Vietnam last week that kept a 20% tariff on Vietnamese imports while clearing the way for U.S. exports to Vietnam to face no import taxes.

Hours after Mr. Trump posted his letter on Truth Social, senior government policymakers called a meeting in Seoul where Mr. Lee’s chief policy coordinator, Kim Yong-beom, said protecting South ...

The 2017 U.S. Women’s Open, which was won by South Korean Sung Hyun Park, was indeed held at Trump Bedminster in July, and the president made a much-talked about appearance at the event.