Smokin' Joe wrote:
"I dunno, those East Germans built a pretty effective wall in Berlin."
Yes they did.
I know of it personally, having gone through the Berlin Wall (wearing an Army uniform), and from having had a chance to observe it from both sides of the Iron Curtain.
It was quite obvious to anyone there that the wall "worked". Of course there were -a few- who succeeded in breaching it, but for all intents and purposes, it functioned as intended. It kept folks on one side from getting to the other side.
Its remarkable efficacy offers reassurance that a wall constructed along the Mexican border, soundly constructed and sufficiently monitored, would produce similar results.
And that's why the democrats -- and even some Republican members of this very forum -- are so adamantly opposed to the idea.
I'm not opposed to the idea, but I would not underestimate the engineering challenge it presents. The other problem is one of water access. Most folks who live on the coasts where water is relatively plentiful don't realize the key to being able to use the land out west is water. Without water access, ranching just doesn't work, and that is a way of life here. Water rights are even deeded, like property elsewhere. Cut off ready access to water (the Rio Grande) for hundreds of miles, put part of a person's land on the other side of the wall, and you have devalued their remaining land (essentially made it useless). Yes, water can be pumped long distances, but the pumping stations will be on the other side, and difficult to maintain because the wall will be in the way. Either a multitude of access points, each one a weakness, will have to be built, a different design conceived which addresses those problems, or hundreds of thousands of acres of productive land worth of ranching and agriculture will literally dry up.
There are, however, vast stretches where a wall is not so seriously challenged, and those could be readily addressed while solutions in design are made for the rest.