My ESTA application was denied while my green card case was pending
I applied for ESTA to visit the U.S. from Korea, but it was denied. It seems to be because of my pending green card application. If there’s no way to enter otherwise, I’d like to withdraw the green card application — is it simple to cancel a green card application at this stage?
It appears your visa-free travel authorization was denied because a green card application is already pending. You should try requesting that the pending application be withdrawn. If you’ve already received the green card, you can surrender it and reapply.