The old paradigm that a country has the right to decide who enters it has been decisively overturned in Europe, it's under siege in such first world countries as America, Canada, Australia and Israel by the creed that says it's the human rights obligation of every nation to accept every refugee.
Given a chance, a sizable portion of the third world would move to the first, a minority because of oppression and a majority because the opportunities and freebies are much better there. Even low ranked first-world nations still find themselves swamped with refugees looking to move in.