>>12391960there is a quantity of human that no border security, that current industrial nations have capacity to build, can guard against.
you'd have to build a colossal, Maginot-line type fortress system with meters-high walls, bunkers, barbed wire and artillery support all the way to stand a chance. Maybe by then we will have advanced drone tech/battlefield bio weapons that would simplify such an operation but i wouldn't count on it. You would also have to either replace the soldiers manning the guns with emotionless cyborgs, or indoctrinate them so much a top SS officer would call them a loony.
The thing about people is a lot of them fit in a small space, and they don't care about getting shot when the alternative is starving to death. Unity isn't really an issue because a starving mob listens to whoever claims will get them fed. Through natural selection they would eventually learn to coordinate waves (the ones who don't die), and then any given point of the system would have to be able to resist mass assault by millions, if not tens of millions. Some fortress some where is going to break and then the whole thing is pointless. Walls aren't built to last forever, they are a bet that you have more resources to outlast the guy on the other side.
And this isn't even mentioning the political disaster that such an undertaking would be in most rational, non-far right nations
