That seems to go a bit beyond a virtual fence, and that’s what needed.
The virtual fence is a nonsense idea from the get go unless they planned to incinerate the illegal border crossers with lazers, or have BP stationed every half mile.
Only a serious wall or double fencing, plus electronic monitoring, will ever provide adequate security on the southern border, and that will need adequate BP on 24/7 patrol to apprehend any who manage to slip through.
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