None of the ones I worked in when I lived there. No bartender or owner with an ounce of sense would risk it. They can be fined, jailed, and shut down for serving under-aged people, so you're putting them at risk. It's not worth it.
It is just a personal thing, but I would have to say as long as they are not packed with Cubs fans I would be okay. My experience in Chicago has dictated this.