It is much easier to assist nations where they are. If you bring in huge numbers of immigrants you tank your own country financially (look at Chicago and NY, they are a mess. Successful people who are paying large amount of taxes leave and it increases the spiral) they then lose the ability to help other countries. Mass unvetted migration is stupidity at its highest order. You have to be measured, selective and smart. Include skilled workers, people that will enrich the communities and culture as well as manageable amounts of asylum seekers and refugees. Mass migration is nuts! For the US it was mass unvetted migration, which involved drugs, sex traffickers, the exploitation of children, the straining of the cultural values and ties of a country. I support vetted legal migration and I support his view and am glad that he is bold enough to say. It's also screwing Europe and all those leaders are too scared? To do anything about it? We don't suffer this issue in NZ so it's hard to quantify but I am telling you Europe is in a bad space. There will be a reaction or street wars, which looks like its already starting.
I am not sure if you are aware that there are some NZ Maori and Pacific Islanders and other minorities that have found it increasingly difficult to get state homes or government support. There is resentment in some of those communities even in NZ because as we increase our immigration numbers our infrastructure struggles to cope. This includes hospitals, policing etc. It is just reality. Then you want to ensure you have social cohesion, smart measured migration is important for all, especially our communities who need help.
This is not racism but common sense in my mind.