They don't have holes in them, though. WTF? Trump specifically said HOLES!!! So you can see the bad people on the other side and make sure they're not tossing bags of drugs over!
What do you mean? The prototype at 0:59 is transparent enough to see the truck behind it. At least one prototype fulfills the promise of his mighty dream. And yes, sacks of drugs must be launched over the wall onto tethered animals, or perhaps mexican day laborers, to test the second essential feature. We have to hold him to his promises!
But only one wall is designed to pander to his fascist dictator aspirations, and nothing says omnipotent totalitarianism quite like a barbed-wire topped wall.
This is why you build your racist ass deportation policy on things that aren't real objects, like an electronic frontier and the spines of your closeted racist base, like Obama did.
Something you can point a camera at is automatically political suicide.