They build sound barriers along major expressways, what is the difference between the “Wall” or a sound barrier, just change the name, sound barriers are the same type wall President Trump purposes, so just call them Sound Barriers so what if that ‘sound barrier is 15-20 ft tall’?
While you are building them put in seismic equipment, and electrified fencing. Remove all aid stations in the deserts as illegal garbage dumps.
The entire interstate road network was built in the 60’s and 70’s using eminent domain. We are talking some prime land that was appropriated for those interstate roads and not some desolate scrub land. Some how scrub land on the border with Mexico is like gold.