It will be a disaster for Western Civilization.
It never led to a disaster when countries had open borders for centuries and centuries before.
You lot who believe the media spoon feeds you are a strange bunch. Always pessimistic, always against change and the betterment of man.
Humans have survived generations and generations of moving from country to country, from continent to continent. We enjoy moving and challenges. Image where you'd be if your ancestors had never left his cave in Africa in the hope of finding pastures greener?
This anti-immigration is pure, media-fed nonsense. We are all sons and daughter of immigrants and our sons and daughter will all give birth to emigrants as well.
It human nature to move and to find places where we can live better, happier lives.