Actually, most borders on the globe are marked by rivers and mountain crests -- and are without fences.
So far as the Rio Grande border is concerned, we can go to school on the nation that absolutely has to have a secure border: Israel.
Their border with Jordan is the Jordan River. And there is no fence. Instead, there are advanced observation posts, technological listening posts and a highly mobile border force.
This approach allows the farmers on both sides of the river access to its waters, while maintaining security.
Good point and facts.
Obvious point to all - Israel has Much greater resolve to maintain security, versus the USA.
We did “try” to deploy One Billion dollars of technology on the border during GWB’s tenure.
If I’m not mistaken, it didn’t work and was deemed a Big waste of taxpayer money.
I don’t believe technology will ever be the answer.
You mentioned Israel employs a highly mobile border force.
Bingo. We need sufficient GIs all along the border with practical rules of engagement.
Mexico soldiers or cartel fire toward the USA, then fire on ‘em till they’re dead or retreat.