Well, very simple solution: let Mexico simply close its borders to the south to prevent economic migrants into their country, pass through their country and into the US. Works much better than any border wall. No wall needed anymore
So he's blaming Mexico (half-way lawless, and on our border) for the complete breakdown in civil society off of *their* southern borders. Fucking brilliant, and a sure way to make friends and influence people -- OR a sure way to ruin Mexico completely, insuring the Western Hemisphere goes mostly back to the Stone Age. ((OR, becomes fodder for infiltration by Russia {"Can you say, "Venezuela?"} or China, who'd both like nothing more than to give us a *real* problem to worry about. Monroe Doctrine be damned -- that's why China is giving us the big F-U on the Spratleys. {"Unsinkable aircraft carriers, a 1-tank flight from their shore}))