With the fear of Syrian/Muslim refugees entering the US, the pro-refugee/immigrant supporters have been using Vietnamese as the positive model example to let them in since Vietnamese and their descendants have adapted very well and contributed to US society in such a short time (doctors, lawyers, astronaut(s), scientists, etc.) . I think Mr. Stewart was trying to dispel the facts about Vietnamese refugees with ignorance and use it as a platform to not support (Syrian/Muslim) immigration in the US. It only shows how stupid he is. Peace and Love!