Whether California, as its courts construed § 11721, permitted conviction solely for the status of narcotics addiction rather than for a specific act of narcotics use or possession.
Holding
Yes. The instructions allowed Robinson to be convicted solely because he was addicted to narcotics, and that state-court construction controlled the Supreme Court's review.
Reasoning
Although the evidence could have supported a finding that Robinson had used narcotics in Los Angeles, the jury was expressly told it could convict him even if it did not find such use. A general verdict followed, so the Court could not determine whether the conviction rested on the valid act-based theory or on the status-based theory.
The Court was bound to accept the California courts' construction of their own statute. The trial instructions, implicitly approved on appeal, treated addiction as a chronic and continuing condition for which a person could be arrested at any time before reforming. Thus, the case concerned criminal punishment of addiction itself, not punishment for use, possession, purchase, sale, or disorderly conduct associated with narcotics.