Traveling with unloaded firearms through states is federally protected.<p>A few years ago, Greg Revell had a layover in New Jersey and bad weather caused his flight to be delayed. He stayed in a hotel, and New Jersey wound up arresting him and confiscating his firearm which was illegal in the state.<p>He argued that he was still traveling; New Jersey said he wasn&#x27;t. He took it to court and won.<p>tl;dr Traveling through a state with a firearm is legal, but law enforcement can (apparently) still harress you even if you are obeying the law.