just found this out, TSA is not accepting a DL as a valid form of ID for domestic travel, from several states. That list of states is growing. Can you imagine, you need a passport to fly from NY to Minnesota and back ? It has something to do with what is called the Real ID Program.
Okay, I know this sounds like one of my made up stories, but tragically, it's not. It's very real, and you can Google it or look it up on Yahoo.
search: Real ID Act for more info.