I could only get the abstract for the article, but the linked brief is likely more than enough. You’re right that intense pressure could have been out on the agencies to expedite the process, specifically, the Attorney General, FDA, and DEA heads are all appointed positions and can be removed from office with relative ease, but that move would come at a heavy cost.
The subtext though is that it’s not a priority for him besides being a campaign bullet point, which you’ve already touched on plenty and I agree with. Rescheduling doesn’t redeem anything in my eyes, but I’m not going to look down on positive progress when it happens. So make sure to 420blazeit and celebrate.
Oh shit, thanks for letting me know. Funny enough, I even tried to download the pdf, but mistook that “download without registration” as a heading for their marketing section!