This thread is really bizarre.
@mydreamcometrue: look for @Paul2752 who was in your situation. He’ll be able to explain a lot.
I agree you shouldn’t try to go to college in Korea and should try to stay in the US.
It will be very unwise to go to Korean colleges because of extremely, to the point unnecessarily, competitive aura in Korean schools…which is why I chose not to go.
Since you are on H-4 visa, you may get GC during college, right? Does it HAVE to be top schools? There are many schools that offer perfectly good engineering programs.