No one cares what language you speak, how you look, political views, sexuality (for the most part), or how old you are. Getting documentation to become a legal there is simple, just bribe them. Thats how most south Americans get around it. The closer to the U.S border the more hostility you might see, so I would suggest Veracruz. You'll find that most foreigners get all the good jobs than the indigenous, like the actors lawyers and stuff because the're white.