In a nutshell, Mexican laws concerning immigration are far tougher than our own laws. I think it would be wise to mirror many of the Mexican laws in order to stop being, according to the Mexicans, "racist".
Below are a few provisions of the Mexican law concerning immigration:
in the country legally;
have the means to sustain themselves economically;
not destined to be burdens on society;
of economic and social benefit to society;
of good character and have no criminal records; and
contributors to the general well-being of the nation.
The law also ensures that:
immigration authorities have a record of each foreign visitor;
foreign visitors do not violate their visa status;
foreign visitors are banned from interfering in the country’s internal politics;
foreign visitors who enter under false pretenses are imprisoned or deported;
foreign visitors violating the terms of their entry are imprisoned or deported;
those who aid in illegal immigration will be sent to prison.
