What about electric fences? What about Guard Dogs that eat people? What about land mines in the "dead zone" between those two fences? What about rules of engagement that allow shoot-on-sight? What about moats with pirhana? What about moats with deadly electric shocks every minute?
All the guards and fencing in the world won't do any good if there's no CONSEQUENCE to being caught between the two fences. DEATH is a pretty fair consequence.
If those 32 guards per mile are hamstrung and unable to "do" anything to the people sneaking across, then what good is it? (And was that 32 guards around-the-clock? If so, that's 1 guard per 165 feet... But if it's 32 guards total, on 8-hour shifts, plus 2 days off per week, it's more like 1 on-duty guard per 700 feet.)
You remind me of the grounds keeper in Caddyshack trying to kill the gopher.
"All the guards and fencing in the world won't do any good if there's no CONSEQUENCE to being caught between the two fences. DEATH is a pretty fair consequence."
I like the way you think. It will eventually have to come to this.