There ain't nothing stupider than listen to someone argue about how you can only get good Mexican food near the border, especially when the argument is coming from someone who has never been to the places they're saying there is not good Mexican food, doubly so when the people arguing on the side of reason have been tried all the options and are the only ones capable of making a judgement on the subject.
So shut it.
Speaking of which, had a Latin (non-Mexican) friend take me out for some sick ass tacos in Chicago recently. Had no idea they had such good tacos there. Rivaled the best stuff I've found in LA and totally destroyed any I've had in WI.