Subject: South Koreans legally in US--OOPS !!
https://www.politico.com/news/...

Atlanta immigration attorney Charles Kuck, who represents four of the detained South Korean nationals, told The Associated Press on Monday that many were doing work that is authorized under the B-1 business visitor visa program. They had planned to be in the U.S. for just a couple of weeks and “never longer than 75 days,” he said.