Just because this stuff should be pointed out repeatedly,

especially when illegal alien groups whine about 'fairness' and so forth,
Mexico welcomes only foreigners who will be useful to Mexican society:

* Foreigners are admitted into Mexico "according to their possibilities of contributing to national progress." (Article 32)

* Immigration officials must "ensure" that "immigrants will be useful elements for the country and that they have the necessary funds for their sustenance" and for their dependents. (Article 34)

* Foreigners may be barred from the country if their presence upsets "the equilibrium of the national demographics," when foreigners are deemed detrimental to "economic or national interests," when they do not behave like good citizens in their own country, when they have broken Mexican laws, and when "they are not found to be physically or mentally healthy." (Article 37)

* The Secretary of Governance may "suspend or prohibit the admission of foreigners when he determines it to be in the national interest." (Article 38)
...
*Foreigners with fake papers, or who enter the country under false pretenses, may be imprisoned:

* Foreigners with fake immigration papers may be fined or imprisoned. (Article 116)

* Foreigners who sign government documents "with a signature that is false or different from that which he normally uses" are subject to fine and imprisonment. (Article 116)

So I don't want to hear another damned word from Mexican government officials about the 'unfairness', etc., of us wanting to secure our borders. Or from the useful idiots who help them whine and bitch.