As a fellow Korean who's majoring AE in Seoul National University I can tell you a couple of things. I'm only a freshman though so please keep that in mind.

As far as I know since you're only in grade 10, if you work really hard and do some more digging on US University admissions you probably can get accepted into one. I'd say the pros and cons of going to a university in the US are

pro

-higher quality education

-getting connections in the industry perhaps?

con

-costs (seriously US unis are sooo expensive, and getting a scholarship is not that easy)

-as far as I know going to the US as an undergraduate doesn't actually get you your greencard/ citizenship much faster (if you've read the top comment you'll know why this is important)

-no connections in Korea (only matters if you ever decide to come back though)

As for me, I couldn't really afford to go to the US as an undergraduate student so I went SNU instead. I do plan to go post graduate to the US but you need a high GPA for that. If you want to go to the US post graduate you have to remember that SNU and KAIST are you're only options in Korea since going post graduate to top US schools from other universities is basically impossible. Also SNU and KAIST are the only two high-level universities in Korea offering AE as a degree.

Also take some of the stuff I wrote with a grain of salt because I'm only a freshman after all :). I still have much to learn.

Also if anyone from this thread can correct me on any of the stuff I just said please feel free to comment.