The math on this is very simple. With few check-points most of your border patrol folks are spending most of their time on the road instead of catching the bad guys. This is a huge area too.
Kolbe knows what he's doing.
We could actually use both methods. Permanent stations every so often and mobile stations in between them. It doesn't take alot of technology to listen in on the scanners to know where the mobiles are. Having fixed sites will allow the border guards to at least pin, or trap the illegals in between them.
No, it isn't, not in terms of vehicular traffic. There are only three roads out of Cochise County between the border and I-10...and all three are sealed when the checkpoints are up and running.
Sorry, Kolbe is dead wrong on this issue. He's either listening to the wrong advisers, or...well, anything else is conjecture.