Given the demographic and economic pressures from Mexico and Latin America, it is not a matter of if physical barriers will be built, but when.
"I am sure that would be the case. In any event, the cost issue is just a smokescreen. The people who raise it have an agenda, which is do nothing to secure the border except have a virtual wall. We have heard the analogies to the Berlin Wall and the Great Wall of China to ridicule and demonize anyone who suggests that fences actually work. They should be built where it makes sense in terms of security effectiveness.
Given the demographic and economic pressures from Mexico and Latin America, it is not a matter of if physical barriers will be built, but when."
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You have said it well. The people in favor of putting a lot of bodies on the border absolutely miss the point. Bodies may work in the short term, but there is a big cost associated with lots of bodies. Put up a lasting ASSET, a fence, then the cost of enforcement will go waaaaay down and the results will go waaay up and the overall cost will become very palatable after 2 - 3 years.
Witness Israel's still young experiences with keeping the moronic, fascist crazies out of their country - how does a country measure the cost of lives lost to sadists anyway?