Travis - what an amazing, why-didn’t-I-think-of-that, eye-opener.
Kelly, we have miles and miles of Jersey highway lined with those walls. Noise abatement barriers. If we can build those just so people who bought into developements backing on the highway can have some decibel reduction, then h-— yes, we can afford to build them along the border.
Make them smooth instead of textured, and top them with razor wire. Invest in some ground sensors.
The flexibility in noise abatement decision-making is reflected by data indicating that some States have built many noise barriers and some have built none. Through the end of 2004, forty-five State DOTs and the Commonwealth of Puerto Rico have constructed over 2,205 linear miles of barriers at a cost of over $2.7 billion ($3.4 billion in 2004 dollars).
We have built the border wall already - just in the wrong places.
I posted the photo of the noise barrier just to make the point that we can build thousands of miles of big walls with lightning speed, anytime we want to. Including on the border.
But in reality, except for in urban border situations, a multiple fence system is better, because the enemy invaders can’t hide their movements behind a wire fence.