Comment by AngryData
MDMA, magic mushrooms, and cannabis are all also Schedule 1 by US federal law too. All it really takes though to get around it is for a state law to allow it and the state to tell the feds to go fuck themselves and close the door to them and make them challenge it in court if they want to do anything about it, which the feds don't want to do because it would cost ass tons of money to fight in court and would only further prove that drug scheduling is mostly just bullshit and lies.
They'd likely have to show they're worse than booze or cigarettes, which is gonna be awfully hard to accomplish.