Just think of the pants-soiling panic, as the fence climbing illegal spots a fighter jet approaching alongside the wall at 650 MPH and 50 feet.
It would give a whole new meaning to the term “wetback”.
One thing that we probably will experience, is a qualitatively new phenomena of illegals falling off these higher barriers, and getting killed or seriously handicapped.
More than half of people who fall from a 30 foot height, will die from that fall. Almost none of people who fall from 18 feet will die from that fall.