You didn't have Illinois in your list. We just got new legislation in 2004 (I think) and it says: (among other things)
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Section 10. Breastfeeding Location. A mother may breastfeed her baby in any location, public or private, where the mother is otherwise authorized to be, irrespective of whether the nipple of the mother's breast is uncovered during or incidental to the breastfeeding; however, a mother considering whether to breastfeed her baby in a place of worship shall comport her behavior with the norms appropriatein that place of worship.
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That being said, most of the language is "baby" or "infant child" although when it talks about jury duty it just says "child". Something tells me that people weren't paying attention to this particular wording when they wrote it but as the mama of a nursing toddler, I can see why it would be important.