This is just a high-level overview - Mexico has a long history of almost making it to being the third North American economic power, and then having something happen to them (or be done to them) that knocks them off that path. As always in life, it's not an easy answer.
The other point to make is that only about half of illegal immigrants in the USA come from Mexico. Many more come from other Latin American countries that are far worse off than Mexico, and almost a quarter of the total come from Asian countries. Just another reason why a wall won't do crap.
The other point to make is that only about half of illegal immigrants in the USA come from Mexico. Many more come from other Latin American countries that are far worse off than Mexico, and almost a quarter of the total come from Asian countries. Just another reason why a wall won't do crap.