PROPOSITION 215, the California Compassionate Use Act, was enacted by the voters and took effect on Nov. 6, 1996 as California Health & Safety Code 11362.5. The law makes it legal for patients and their designated primary caregivers to possess and cultivate marijuana for thier personal medical use given the recommendation or approval of a California-licensed physician.

SB420, a legislative statute, went into effect on January 1, 2004 as California H&SC 11362.7-.83. This law broadens Prop. 215 to transportation and other offenses in certain circumstances; allows patients to form medical cultivation “collectives” or “cooperatives”; and establishes a voluntary state ID card system run through county health departments. SB 420 also establishes guidelines or limits as to how much patients can possess and cultivate. Legal patients who stay within the guidelines are supposed to be protected from arr