Whadaya bet there are people frantically searching the border area right now! For What? Mice, bugs, birds, plants, or anything else that might be “threatened” by the fence.
The fence will not be built ‘til most of Central America is north of the border. Then they’ll build it - to keep the slave labor from going back home!
Searching hell! They are probably importing Prebbles Jumping Meadow Mice and Spotted Owls by the truckload. It's amazing just how prolific these endangered species can be when you really need them.