As a resident of the borderlands, my simplistic perspective is it's not functional as a deterrent.
Would love to hear more about your perspective.
I consider myself very uninformed when it comes to the realities of the border and living near it... I've never come within 50 miles of the US/Mexican border it's just a concept to me. I know this will probably sound a bit silly but i'm from New England, basically, in my mind the border is very secure and I assume difficult to cross. Is that not the case? Honestly, I bet many folks so far removed from the border have any real concept of what should or shouldn't be done to keep or make the border secure.