The issue here isn't the DEA or the current Administration in power, but whether a profitiable "therapeutic business model" can succeed in the establishment pharma market, with respect to any controlled substance.

[Edit] for obvious reasons, psychedelics are unusual in this regard, and a hard sell

Do we know which governments throughout the world are more liberal in this regard?

I'd like to think if there was a place this sort of research could take place someone or some pharmaceutical company would be there doing it?

I've read of psychedelic research done in Mexico, Portugal, Switzerland, and the Netherlands. MAPS has information on some international studies being carried out on psychedelics.[1] Erowid probably has some too.[2]

(Curious how MAPS is HTTP and Erowid is HTTPS.)

[1] - http://www.maps.org/research

[2] - https://www.erowid.org/psychoactives/research/

The F.D.A. today has approved further clinical trials into the use of MDMA to treat PTSD:

http://www.nytimes.com/2016/11/29/us/ptsd-mdma-ecstasy.html

We can only hope this sort of research will continue to be done, elsewhere if not in the US.