Hmmm not really. TSA tells people on it's official site that presenting ID or providing information to identify yourself by another means is required, or you can be denied access through the checkpoint.

Interestingly enough, Gilmore argued that because the SD was secret, such secrecy deprived him of due process. The court rejected his claim, in part because notice is given many times you must provide your ID, which makes the SD not so secret.