How has the USA Homeland Security "Real Id" law affected your ability?
Your DMV shall give you a driver license that says federally restricted on it if you do not go through the real id process. That means your driver license cant be used for an ID at anything federal or to get on a plane. But a passport can be used instead. On either you have to positively identify your self to get it. Unless you cant prove your id with the documentation needed REAL ID getting a real ID is pretty straight forward.