us_states.STATE_CHOICES, USPS_CHOICES should be tuples, not lists
|Reported by:||Tim Graham||Owned by:||nobody|
|Cc:||Triage Stage:||Ready for checkin|
|Has patch:||no||Needs documentation:||no|
|Needs tests:||no||Patch needs improvement:||no|
Since r15058 these lists are sorted but that makes them lists instead of tuples. To be backwards compatible and for consistency with the other choices, I think they should be tuples.