De acordo com o blog da TSA
If you’re 17 or younger, no problem… you don’t need ID to travel. If you’re 18 or older, no worries… you can still travel.
How so? Simply approach the travel document checker and let them know that you don’t have your ID.
You’ll be able to fly as long as [...] you’re willing to provide some additional information. We have other means of substantiating your identity, such as using publicly available databases.
E avisa que:
If we can’t confirm your identity with the information you provide or you’re not willing to provide us with the information to help us make a determination, you may not be able to fly. Regardless, if you do not have ID, please allow extra time for check in. We would not want you to miss you flight.
Esta postagem flyertalk reitera o mesmo: apresentar ID expirada, esperar por perguntas. E esta postagem sugere que até mesmo um cartão da Costco foi aceito (uma vez, certamente não oficial).