Have you ever thought about immigrating to Mexico, especially if you are not a Mexican citizen and your surname is not Sanchez? Unless you promise not to work there and that you bring a lot of U$S cash with you for retirement, then it would cost you a fortune. For that reason, the immigration traffic between Texas and Mexico is one-way (North). If a gringo is caught working in Mexico without proper authorization, you can anticipate spending years in the juzgado (jail), and under filthy conditions. Gringos pay to Mexican immigration lawyers hundreds of thousands of dollars to get a visa to work in Mexico.
from the article: A flood of Mexicans