Comment by kjellsbells

Thats a good idea, although it is not completely robust.

REAL-ID only proves that the holder had legal presence at the time of issue, not that the holder maintains legal presence at the point of presenting it to the ICE officer. For example, holders of Temporary Protected Status would have been here perfectly legally and been able to get and hold a REAL ID. But their status has just been revoked. So an ICE officer could still refuse to accept it as proof of legal status.