The US has 28,000+ military personnel occupying the country.
South Korea has no jurisdiction to charge any of these soldiers, if they commit a crime in their country.
South Korean military personnel are required to answer to US generals as a higher authority than their own.
We could also spend a while digging into the political and economic control the US exercises over SK, but a literal military occupation should suffice.
Explain how SK is occupied, and not a sovereign nation state.
We could also spend a while digging into the political and economic control the US exercises over SK, but a literal military occupation should suffice.