"Since California passed the nation's first medical marijuana law a decade ago, a provision requiring written doctor approval to grow and buy pot has created conflict between the state mandate and federal drug laws, and strained the doctor-patient relationship."
This is a classic economic crime and has zero moral claim to observance.
"GlaxoSmithKlineDrugCorp LLC will be very angry with us if we let people treat themselves inexpensively. Come with us, please."
I will point out that cannabis is very good for treating depression. It lifts the spirits without having to resort to toxic drugs that, oh, make you want to kill yourself and stuff.