We had a 35ft ladder at work to climb walls and such, but it took two men to carry it and if it caught the wind while you were raising it, fingers and arms were in jeopardy as it slid down out of control. I doubt many Navy Seals could scale a slick 30ft wall in any reasonable amount of time, let alone a woman with 3 kids.
The only options that will be left soon is deadly force by drones firing Hellfire missiles or electrifying a metal fence. I figured by now the militia's would be placing snipers with .50 cals on a mountain by now. Militia's have been down there before.
"...would stop 99.8% of illegals..."
“A 30 ft wall like the ones used as samples, would stop 99.8% of the illegals crossing the border.”
Falls from 30 feet also kill more the half of those whose fall, on average.
So there is that deterrent as well. Horror stories will start getting on TV in Mexico.
A guy fell off the new 30 footers in Calexico last year, a month after they went in. Broke both femurs and his back, but got airlifted to a trauma center before he died, because the site was continuously monitored with night vision cameras.
30 footers will be going in more places this year - the other side of the Port of Entry in Calexico, Tecate, CA; Andrade, CA; Yuma AZ; Lukeville, AZ - and San Diego from the Ocean to the mountains. Those contracts have already been awarded and were funded in FY18.