Utah's prohibition extended even to owning pipes for smoking the drug. Bonnie and Whitebread found no record of local concern and suggested that Mormons who had lived in Mexico and returned around 1912 may have brought knowledge of marijuana back with them. They date California's first marijuana prohibition to the same year, when the drug was added to an existing antinarcotics law.[1]
Listed for context. No score change is recorded for United States here.
References
- The Marijuana Conviction: A History of Marijuana Prohibition in the United StatesRichard J. Bonnie, Charles H. Whitebread II · The Lindesmith Center · 1999 · chapter 2, p. 41 · ISBN 1891385062
Checked. The date and the event were compared with a source that was read.