CO, I wasn’t criticizing the fence, but no one disputes it has rerouted much of the traffic elsewhere, particularly AZ which has seen their traffic quadruple.
I was pointing out the need for the electronic surveillence in tandem with the fence.
I have no problem with that. I'm sensitive however to the idea that electronic surveillance alone will suffice. It's simply a force multiplier, focusing manpower upon where there is activity.
Insofar as a "virtual fence" is concerned, cut the power and it's gone.