Wouldn't be surprised if it hits that before 2050, with the current governments in place and the state of most European economies the only option they see fit is to flood each nation with more bodies. The problem is the people they are bringing in aren't workers but more system leeches with limited skills (if any) and without any notion of how to act or integrate into a functional society. At this point I'm not sure anything can be done, it's just which happens first. Economic collapse of one nation after another and an entire EU default or societal collapse from within and revolution.