The wall is a glorious example of how stupid and simple-minded these Trump-humpers are.
How do you keep people out? A wall. A tangible item. That's the line of critical thinking, full stop. Nothing is considered beyond that, because it's literally beyond supporters' capabilities in what passes for their minds.
If Trump said we were going to build a big, beautiful TUNNEL to get to Europe instead of airplanes, his retarded base would back “The Tunnel”. They would bend over backwards to defend the most beautiful Tunnel ever.
Because there's only about 60 some countries with thousands of miles of walls around the world. I guess they all love Trump too.
OBVIOUSLY if you build a wall you have to have the structure to police them. The Berlin Wall would have been POINTLESS without someone watching it. During the Soviet Era, for many countries there literally was an Iron Curtain. Right now, Finland is building a wall - fence - along its border with Russia.
Right now, wall or not, we don't even possess the will to turn anyone BACK. They could climb the wall right now in full view of the Border Patrol.
Walls - fences - etc - they impede movement. That's why they exist. Otherwise, why build a wall around a prison - or around a military base - or around the White House?
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BTW - a transatlantic tunnel HAS been proposed and examined, in the past. Technology isn't there yet, but I might live long enough to see it get started.