The states have the right to legislate their own CCW regulations. I may not agree with them, but, as a non-resident, I don't and shouldn't get a say in their policy decisions. That's Federalism.
While the notion is tempting, I have to look farther down the road...there are powers that are reserved to the states, and this is one of them...I wouldn't take kindly to outsiders meddling in the affairs of my state, and for that reason, I'd be hard pressed to meddle in theirs.
I would agree with you if we weren't talking about a Constitutional right