What are the medical and legal issues surrounding rescheduling marijuana?

Your Critical Thinking essay should focus on the following:
What was/is the intended purpose of the Controlled Substances Act 1970
How and why are drugs classified/schedules
What are the medical and legal issues surrounding rescheduling marijuana
How and who enforces CSA regulations.

Don’t repeat everything that has been covered, more interested in how you synthezie and analyize the infromation