There actually is a way to get Mexico to build and pay for a wall - smuggle guns into Mexico.
The Mexican government fears guns greatly.
We’ve got plenty of excess guns to export.
I don’t recommend it since it would endanger Mexican and US law enforcement personnel.
It’s probably illegal too.
Factory made guns might have secret markings.
¡Muralla, por favor!
What would you care to wager that the Feds have tens of thousands of AKs rounded up from Iraq, sitting in a warehouse, somewhere, and millions of rounds of crated 7.62×39mm...