Yes, there is a federal preemption law (FOPA) that permits travel through a restrictive/prohibitive state if the origin and destination permit the carrier to la

Yes, there is a federal preemption law (FOPA) that permits travel through a restrictive/prohibitive state if the origin and destination permit the carrier to lawfully posses the firearm. However, meeting the FOPA criteria may be treated as an affirmative defense in some states. IANAL so YMMV.