More than 300 South Koreans detained in the US after a massive immigration raid on a Hyundai-LG factory have returned home, despite the Trump administration's offer to let them stay. As he marked 100 days since he took over a country in crisis, President Lee Jae Myung warned that the incident could make companies hesitate to invest in the US. Jay Song, honorary associate professor at The Australian National University, speaks to FRANCE 24 about the possible wider consequences of the raid.