[Liberty Valance]

The driver abandoned the truck after it became stuck in the river bed, escaping into Mexico.

The river bed? The Rio Grande river bed? Was it in the middle of the river? Yes, I want a fence on the border too but we need more info here.

[FerdieMurphy]

It's a cinch we can't patrol THAT river with a submarine.

Best to mine the entire border then pick up the pieces later.