Why Mexico Won't Stop the Immigrants

While I was spending some time in the back room (see previous posts), I started to think about why Mexico's President Fox stated that he would not even try to stop Mexican citizens from crossing the border to the United States. Here's what I came up with:

• For every Mexican that crosses the border is one less person that the Mexican government must take care of or be concerned with.
• The illegal immigrants create revenue for Mexico by sending a portion of their wages back to their families, who in turn, spend it in Mexico.
• If the immigrant is a criminal in Mexico, it's one less person for the Mexican authorities to track down, try in their courts, and incarcerate (with the associated expenses).
• In many ways, these border crossers are one of Mexico's greatest exports, at least from their viewpoint.

So from an economic sense, Mexico is making out like a bandit (!) by not stopping or curtailing illegal immigration to the United States. Can you think of any others that I may have missed?