Does the TSA have a problem with the truth, accuracy and scientific research? Apparently so, going by what the TSA stated above and it's lack of distinction between different types of medical narcotics, in this case different types of "medical marijuana".

Federal law provides a basis to treat some medical marijuana differently than non-medical marijuana. And the same goes for other controlled narcotics too. Is the TSA unaware that federal law has provided some medical researchers a lawful right even to cocaine, for example? Much the same goes for marijuana too.

Possession and trafficking of such controlled narcotics for non-professional use is most frequently a federal crime; however some use of such controlled substances for medical purposes -- for example medical research -- is provided for under federal law.

I am no fan of recreational use of any mind-altering controlled substances, but I do expect that some controlled narcotics do have a role in medicine for purposes including palliative/hospice care and medical research.