historian said:
The answer for both Europe and the US, especially Europe, is sustained mass deportation. Thankfully it has begun under Trump and there are promising signs that the people of Europe are thinking that way. Will they be able to elect leaders with the courage and determination to do it? Is it too late? Good questions that will be answered in time.
There is no way to sustain mass deportation of millions of people without bullets... which is why Israel is the only country with strong borders and very little immigration issues. They dont give a **** about killing people.
I pray everyday the west adopts Israeli approach to immigration and deportation... its cruel and requires hearts of stone... but its the only way these countries can save themselves.