Illegals are also caught regularly on a facility that is used for military training for deployment. That facility is used to train regular Army as well as Special Forces and Navy SEAL training. The facility I am referring to is also used for Homeland Security training, many alphabet federal agencies do explosive training, hostage training, etc. there.
I would imagine all the military and other sites near the border have issues with illegals. Most don’t see it as a security risk- the attitude is they are only illegals. I see it very different, those illegals are complete unknowns and could actually be terrorists or working with terrorists.
Citizens cannot just waltz into some of these places, accident or not or even legitimately work there without being under a lot of scrutiny. Yet a blind eye is turned to people entering illegally that we know absolutely nothing about.
Maybe placing a few hundred mines around the place will slow things down. A few big “BOOMS” going off might discourage a few.