What would be a person's obligation to prove that he/she were coming from a state where the weapon could legally be possessed?
I was stopped at the check in counter in Syracuse after declaring a pistol in my checked luggage. The Airline attendant told me she was required to notify local police. My gun was already in the custody of the airline, bound for a state where I could legally carry it concealed. The Syracuse Police took the gun into custody and required me to pay an FFL on both ends of the journey to send my gun back to my home state, 10 days and 150 dollars later.