I don't think anyone has ever claimed a wall would replace the Border Patrol and 100ft is an exaggeration a liberal would use to try to make people in favor of a wall look silly. I would imagine 20' or 30' would be sufficient if you had a few LEOs watching for herds of ladder toting beaners approaching, and a extra hot hot wire on top, maybe even some of them motion detectors around there. I bet a few of would still outsmart you, but I don't think a few million a year could, if you had a wall that is.

[Linked Image]