If you’re not certain that a drug-sniffing dog won’t be able to detect cannabis in your vape, don’t take it with you. Marijuana is illegal in many countries, and so are its concentrate, oil, and edible forms. Even a clean dry herb vape or weed vape pen may be considered ...
according to TSA rules. If the cartridges you're carrying for the vape pen contain THC, those are illegal on the federal level. You can also bring marijuana paraphernalia (bowls or pipes) in your carry-on.