Indeed, even a putz like me could dope out several ways to handle it.
I tend to bring it up when folks seem to think it's just a matter of building a nice wall.
It ain't that simple. Not impossible, but a wall won't get it by itself.
That's OUR water and we ain't giving it up.
Just build the wall on the other side of the river. See? It is simple ;)
Seriously though, there are myrad ways to deal with the water thing. Even if we build the fence on our side rather than straight down the middle of the water, we can bring that water in. AND still defend/use the land between. That’s where the cameras, crossings ect come in.
A 100 foot steel wall sunk 200 feet down and down the middle would be nice, but no, it won’t happen. But it doesn’t have to. The border patrol now playing hide and seek at best could man crossings and camera centers along the length. Sensors are already out there. More can be planted.
So many ways to skin the cat.