One cannabis mistake at airport could bring 10 years in prison and $15,000 fine

Before heading overseas, American travelers are warned to double-check their bags for one item that could lead to hefty fines or even prison time.

U.S. officials are reminding travelers that bringing cannabis products across international borders remains illegal in many countries — following a new customs policy in Thailand that significantly increases penalties for violators.

In June 2026, Thailand introduced tougher penalties for travelers caught bringing cannabis across its borders.