Because Mexico and its corrupt culture is so pi$$-poor that it is offloading its unfed mouths on us already. The only thing that should be exported to Mexico is wetbacks and the "anchor babies" they have dumped on our socialistic services.
WTH do you propose to export to Mexico -- that they can pay for?
I provide the information for my own entertainment, but please click-through the link above and educate yourself. It will make our future exchanges that much more enjoyable.
Please do not change the subject to the trade deficit, as is all too common. If you do, I will be forced to ask why you didn't bring it up in the first place. So, do you want to make it easier to export goods to Mexico, or not?