Bingo!
Mark ‘em.
Drop ‘em on the other ide of the new Fence.
Shoot ‘em on sight if they show up again on this side of the new Fence.
Murder is a capital crime. Treason is a capital crime. I think sodomy with a minor should be a capital crime. But trespassing, even on the wrong side of a national border, is not rationally in that same category.
This kind of talk on our side is stupid "Keyboard Kommando" stuff at best, and at worst shows a brutal streak which is repugnant and morally objectionable.
Just off the top of my head, I'd say we should hold Mexico to strict liability for the cost of the management of illegal migration from Mexico. Calculate the totals, and bill them. If they won't pay up, seize all Mexican assets that are here in the U.S. (like bank accounts.)
If that doesn't satisfy their liability, seize as much of Pemex as we can get our hands on. Pemex has a total asset worth of $415.75 billion, and annual revenues of about $80 billion.
That ought to motivate Mexico to control the border from their side.
Heck of a lot better than murdering a bunch of poor cholos at the Wall.