I haven't been to Chipotle for a while but I did go there quite a few times and never had the impression they were employing illegal aliens. It seemed more like the workers were just very young people, maybe a lot of them on their first job and a little careless.
In contrast, at one of Chipotle's main competitors, I often had the impression that a lot of the staff might be illegal aliens (although they seemed to be very good workers), and one time it appeared that almost the entire staff had changed and a new poster from an immigration agency appeared on the wall.
Try going to Chipotle in Colorado. Their workers don’t even speak English.
I wont eat a Chipotle. They hire illegal aliens