Oh yeah I bet. In the US he is likely to be stuck in the same detention center that El Chappo and SBF were placed in and that was more for their protection than punishment. I don't really know how the Korean court system works but given you said he faced a max of 40 years and the courts were lenient if he gets say 15 the US will give him something like 40 to 50 with a minimum of 20 to 25 making him be 70 to 75 when he could first possibly get out