Rx under DEA scrutiny is nothing like rec or laughable state controlled medical 'recommendations'. You pull that shit as a provider on controlled scripts and your charts get audited, your DEA license gets pulled.
Imagine a noncitizen in that situation being able to tell a border officer, or a citizen being able to tell a security clearance investigator: "Yes, I do use THC. Here's my prescription and the bottle from the pharmacy." and being confident of no negative repercussions. Wonderful progress compared to where we are now.
Then it was legal for like a year until feds realized they didn't need to follow the Constitution and they just outright made it illegal, no matter if it's actually interstate.