He's not getting his wall because the country can't afford it.
Tell a spoiled child as often as you like. Until he learns that no means no(yeah yeah. I doubt he's heard it too often in life either !) nothing much is likely to change.
I mean he may even have had support for his idea !
But the SECOND he put honest,hard working folk OUT OF WORK, he lost the argument.
So. Who's gonna tell the spoiled brat he ain't getting his own way ?