There isn't one. That's why I wish there was. I thinks it's bull that each state has their own laws about this. I think that if you take the course and pay for your CCW permit, that you should be able to travel anywhere in the U.S. with your gun. This crap of stopping in this state, unloading, and locking it up is stupid! I just can back from Jersey, New York, and Connecticut and didn't even take my gun. None of those states, honor Ohio's permit.