A physical wall is so Roman Empire. Emporer Hadrian would be proud.
All we need is disguised motion activated cameras, drones, ATV with armed agents and a command and control system. We could be doing this next month for a fraction of the cost. Apprehendees would be finger printed and deported on the spot. If returned, then internerned for a year.
Eventually a trickle.
Safer & more reliable than telling someone else to run after a bunch of armed illegals criminals with women & children in tow to be freed by a bunch of liberal judges
What?
We don’t send the people we DO find “home” now ...
What makes you think Bush or Clinton would send them home in the future?
Any school kid can watch them cross the border, it is what happens after they cross that is the problem.