Why Do Mexican Immigrants Want To Leave Mexico?

I'm sure many people will disagree but from my experience living and working in Oaxaca, Mexico and from what I hear from my uncle who is Mexican and was once an illegal "alien", immigrants from latin america come to the U.S. Because they can't find work in their own towns and cities.  Simple enough. But one of the reasons they cannot find work is because of international economic treaties such as NAFTA (the North American Free Trade Agreement) made between the U.S., Mexico and Canada that allows U.S. Companies to freely compete in Mexico.  This sounds good, until you realize that U.S. Companies such as coca-cola, exploit natural resources such as farm lands and fresh water leaving local residents without jobs or clean water because it was just sold to an international company that has little interest in helping the communities.      Many of mexico's small farms were bought out by Big-Arga companies and forced farmers to sell their lands making family farms into industrial farms, ruining the land and killing off jobs by the thousands.  Most people in Mexico don't have a reliable source of water because of all the industrial pollution made by big international companies. Another phrase we use is "neo-liberal globalization".      If you want to know why "Mexican Immigrants want to leave Mexico", you should ask your senator why he/she passed NAFTA legislation.