The problem has no easy solution. It's hypocritical for Europe to get outraged at Trump for his "build the wall" rhetorics, when the EU builds things like that: https://cdn-images-1.medium.com/max/1500/1*ZFlsI2UBvlrqGsFWm6rt0w.jpeg (Spanish enclave of Ceuta). Here you can see how the Spani...