Europe will be fine. America handled all of its immigrant surges well. Maybe first generation migrants never assimilate but their kids always do.
It's not gonna be fine, take off the goggles for a while. The immigrant crisis not only creates huge problems to the European societies because its size but emboldens the pan european far-right movement that keeps getting bigger. The immigrant crisis in combination with EU's disgusting neoliberal policies is ruining Europe while the European left sits on its ass supporting that monstrosity and not proposing solutions about the immigrant problem. They're all fucking useless and a huge disappointment.
But you distinguished mentally-challenged fellows keep creaming over Obama, the dipshit that allowed Clinton to fuck up two continents at the same time.