How bout we leave a breach every so often and camo it with a funnel into a holding pen. That way we can build a trebucket and send em back over ticket free.
Actually, a overhang towards the Mexican side lined with razor wire. Not kidding about this either. The moat within the berm should be lined with something really nasty. They get over the wall somehow and its 50 feet down, onto spikes.
I like the trebuchet idea.
Fly the Friendly Skies!
Yes, a nice gentle slope to make things interesting.
If we’re going to put a moat in, I say fill it with sea water and load up the Bull sharks. They kill more people than Great Whites.
Swimming vessels of aggression that attack whatever is in their area.