"Mexico will pay for it!"

I guess that depends on who you ask. Trump seems to claim that by renegotiating NAFTA that Mexico is paying, but that would give bigger profits to businesses (that's disputed), not the federal government that footed the bill so far. I could see that point if then those companies were then taxed to pay for the wall, but that is not the case.

So my answer is..."Ahhh! No!"