My stipulations would be that the wall has to be a wall, not a fence, not a rope line, not a pile of sand bags or any other kind of nonsense. A wall.
And it has to cover a significant portion of the boarder, 75% or more.
If these two conditions are met, ever just PM me and I will send you 1000 US dollars. If these conditions are not met in the next 5 years I expect you send me one Canadian Dollar (a looney).
And I don't care who pays for it. I am just telling you that Mexico will not pay 1 peso.
Deal?