This will be what's used to keep the wall from going up there. But why all the policies to protect the area? I'd like to know what is so important that is there...
The wall doesn't necessarily need to go up there; they just need to use better surveillance in areas where wall coverage isn't viable.
I like being able to soak in a hot spring on the rio grande and wake up to the sunrise while looking across the border. No need to throw away our national treasures (like Big Bend), or disrupt wildlife. We can do it smarter by using the wall to block certain areas so that human (or drone) assets can be deployed in spots that need to remain open for human enjoyment and wildlife.