The other interesting case to watch is the Indiana case that the Supreme Court accepted on Voter ID.

The State's argument - accepted by at least one judge - is circular: "Since ID is pervasive, you can't board a plane or cash a check without an ID, it is perfectly reasonable and allowable for the State to require ID for voting". Of course, as ID is required more and more under this logic, it does become universal, meaning that one can support any use of ID by using the same logic.

If the Indiana statute wins, then it will simply be used as precedent in favor of more ID, more of the time.... including more rigorous ID checks by TSA. If it fails, we'll need to look at the language of the decision to see if it could be leveraged into a precedent elsewhere.