I believe for some states its the trianing and others is because of a photo ID on the permit / license.
I wish it was like VA and was just a box they check on your Driver ID and I don't have to carry more than one that way. I got enough crap in my wallet between the parks, zoos, and museums that it would be nice to get ride of something they could just put on my ID I already have. My
+1 on everything in this post.
Of course no permit / license at all required in any state would be optimal. But....
Training and Photo on license I believe is a block to to other states. Plus I really wish they would just put a box on our DL and only issue a separate license if you don't have a DL.