As I looked around the room, I saw people who retained much of their former culture, but also embraced American culture. I have no problem with these people. I welcome them to this country. Almost every culture that has moved to America has done the same thing — Irish, Italians, Japanese, Koreans, Buddhists, Hindus, Jains, Sikhs, Taoists, atheists, etc. — they bring their own culture, but also enjoy what's good about American culture. They are all welcome here.
But the political ideology of Islam is dangerously domineering. For that reason, it is not welcome. Among its core tenets is a mission to make Islam the dominant religious and political system wherever its believers live, using peaceful means if possible and violent means if necessary.
The Thai students may retain some of their former culture, but they do not try to impose it on anyone else. They don't protest or riot if anyone does something their culture disapproves of. They don't sue people or assassinate them if they criticize Thai culture.
I'm not a racist or a xenophobe. I enjoy people from all cultures and religions, except those who are committed to eliminating all other cultures, religions, political systems, and ways of life but their own — a principle that is not only part of Islamic doctrine, it is Islam's prime directive.