It wouldn’t. The future costs of welfare fraud, unemployment of AMERICAN workers, and health care for illegal immigrants would more than pay for the wall.
You would need a 25 foot steel wall. You would need a 10X10’ wide and deep ditch for Border Patrol. You would need rows of high chain links with razor wire.
That might seem a lot, but I am sure that one family of illegal immigrants and the governmental costs involved for 10 years would pay for a good mile of that fence. We could build a fence to the moon.
Fair enough, but wouldn’t soldiers be a cheaper? Maybe we can have the CBO run the numbers :-)