pesty gophers!! Hightech gear suggestion has always made me wonder too...but the hush money they pay out is working to keep on lookers quiet, and people in office too.

It's insane. It's as if USA dosen't care if this happens. I don't understand why they just don't make a tall wall, burried very deep, super reinforced. All the sewer and drains on the US side should be reinforced too.

I KNEW this would happen with relying only on just the fence. They've been using tunnels for many years so this should come as no surprise. I believe that some high tech gadgets to detect human presence is needed, set to alert whenever they 'feel footsteps' and heat sensors, infrared, whatever. The technology is there. They need to USE it, don't tell what is used--but just DO IT! NOW!

Just stick a couple rabid racoons down there. They have plenty of them in Flagstaff.

I keep suggesting we just need to block the American side of the tunnels and pump in a few thousand gallons of cyanide gas, but no one seems to listen!!