The western world is run by idiots.
It is just as impossible to vet “immigrants” from the Middle East, to ferret out Jihadist or future Jihadist tendencies, as it is to vet Afghan men for the Afghan government’s military forces and trust they will remain loyal to that government more than to Islamists in Afghanistan.
It is pure imagination and arrogant pretense that WE CAN KNOW what a Muslim “immigrant” to the west will do or become.
So, by what logic are we required to take the chance? None. By all logic there is no rational reason for it.
Iz Lame ? Pretend the problem doesn't exist.
I dare say that over the past 1400 years Iz Lame has slaughtered more than 60% of the Christians, Jews, Hindus, Buddists, and others it's come in contact with.
Since it's inception it's consistanly been more lethal than plagues we're familiar with in the 20th century like the 1918 flu.