Even the Mexican side lives in a state of sin as it comes to tacos. If you must, go to Tacos Chinampa.
An apology for coming off so critical but the pretense that food is just as good in the US rarely pans out without breaking out the $$$. Mind you, there are good places, and good food but its the exception and here we are only talking generalities. Just like having good table service.
Unfortunately it is a cultural thing; the food culture that produced, accepts and consumes "I Can't Believe Its Not Butter" cannot have non-"I Can't Believe Its Not Tacos" tacos.
