Question: Which of the following is true concerning traveling with CBD oil? The laws in the U.S. are more lenient than other countries, and travel is not an issue. You can take any quantity onboard any mode of travel whether air or train or bus. The final decision rests with the Transportation Security Administration (TSA) officer on whether an item is allowed through the checkpoint. Most countries that U.S. citizens travel to are open to CBD oil but not to other forms of cannabis.