Mine fields with single barbed wire fence, warning signs in Spanish.
“Mine fields with single barbed wire fence, warning signs in Spanish.”
A little too East German? That kind of barrier affects traffic in in both directions.
Walls plus military & BP does it for me. Also, maybe give folks living on the border, such as ranchers, a remedy against public officials who don’t discharge their duties in regards to the border area, and corporations that hire the illegals.