I got some news for you. The Mexican president is not in charge of whether the US builds a wall or not.
Of course. The article states that he won't pay for it.

He's not in charge of whether Mexico pays for it or not. All that the US has to do is place a small fee on "Remittances" from the US to Mexico. That's the money all the illegal Mexicans here are sending back to their families.
So you see, this is really not very complicated.
Lol!
Not very complicated no...
You really think you'll be able to tax money illegal migrants are sending back home?
Don't you feel it's a bit insane to accept the employment of illegal migrants but taxing the money they earn?