@NjoyBhappy I think you didn't get a question right. It was not about the acceptance of Driving License or State ID. I assume that @0811eddie asked if a Permanent Resident Card ("Green Card") is considered being a State ID or could be legally used instead of State ID.
I was also wondering this question but what I have already experienced so far showed me that Green Card IS NOT accepted as your State ID. However, most of the time it's well-accepted INSTEAD of State ID as a primary verification document as well. There are some exceptions though, so you need to check the exact verification rules where you are going to apply it. Hope that helps.