In the US, drugs are ranked in schedules from 1 to 5 based on how dangerous and useful the government thinks they are. Schedule I (the DEA — the Drug Enforcement Administration — drug police) means 'no accepted medical use and high abuse potential.' Both psilocybin and MDMA sit there now. Changing that requires the FDA to approve a drug first, and that hasn't happened, so the DEA can't legally move them.
Near-term version of the scheduling thesis. No pending final FDA approval exists that could trigger rescheduling before mid-October 2026, making this a high-confidence short-horizon resolution.