Looks like even the DEA is finally starting to come around to the benefits of 'da mota.

A May, 2016 article at Popularscience.com says that the United States Drug Enforcement Association, (DEA), has approved a trial run using marijuana to help treat military combat vets deal with post traumatic stress disorder. (PTSD)

The article said the Multidisciplinary Association for Psychedelic Studies, (MAPS) got a $2.1 million dollar grant to try using ganja on 76 war veterans with "chronic, treatment-resistant PTSD". The article also said:

With the DEA already on board, the study been given the green light from every relevant federal agency, including the Food and Drug Administration (FDA), the National Institute on Drug Abuse (NIDA), and the Public Health Service (PHS). According to MAPS, the study is expected to start this year, once they receive the medical marijuana from the NIDA.

No results have been announced but, hey, it's only been 3 months. Hopefully there's some good news coming!