Actually Jolie Chicago has a really large Mexican population and, therefore, some really really awesome mexican food. The best mole sauce I've had outside in Cali was in Chicago
But no mexican food in the states will be as authentic as what you find in Cali

....All that Tex Mex has done nothing but screw up the true authenticity of Mexican food. You guys can have Taco Cabana

, Chuy's (although i do like their salsa and chicken tortilla soup), and that place over on Richmond (can't think of the name)