TSA's website page requires an expiration date to be on any ID before they will accept it as valid. (Though to be honest the page doesn't actually say that the card can only be used pre-expiration.)
Exactly. And I've pointed out here on FT that therefor there's no requirement per the written policy statement that an id be unexpired to be acceptable, and the only response has been the internet equivalent of being looked at like I was crazy. And I've also asked why, if the id must indeed be unexpired to be valid, the TSA's written statement doesn't just say so by using the words "unexpired" or "currently valid" in the statement, and I've gotten the same response.