Their argument was Trump personally delaying the departure by one day to ask if anyone wants to stay and train American workers. I.e. they understand they messed up, but don’t want to admit any mistake.
I mean, prior to this, just a small possibility of being sent to the US was a big perk (job descriptions often highlighted this in bold fonts) Hence, companies would rotate people to hush complaints ("that guy gets to go to the US more than me!")
now... if being sent could mean "you could be banned from entering/working in US", it's a big no-no
Anyway, this will mean extra costs + less competitive people going to the USA (they should be forced to go, so... it'll probably be people with career dead-ends, whom americans might not want to 'learn from'...)
the only fix to the issue: officially commit huuuuge working visa quota for s.koreans...
this isn't some low-skill burger-flipping workers staying permanently and replacing a whole career of american citizens' jobs...
US just had to turn a blind-eye, wait until those workers are done with the set-up and leave for good
And now... things got ugly too quick -- I doubt even Trump wanted this.
My pet theory is... this is a classic example of an political double-spy (Tori Branum) being "cooperatively passive-aggressive" (if party a shouts for A, get inside party a, and go to the extreme far-end of A to show A is bad -- though in reality, some middle-ground was what party a was initially aiming for)