Pew’s March 2013 survey of 1,501 adults found 52% supported legalising marijuana and 45% opposed. Its published report distinguished policy opinions from self-reported use and other questions. A public-opinion result did not change federal law.[1][2]
Listed for context. No score change is recorded for United States here.
References
- Pew Research Center — Majority Now Supports Legalizing Marijuana, 4 April 2013March 13–17 survey and results; not a present-day poll.archived
- Cannabis: non solo fumoBernardo Parrella · Stampa Alternativa · 2014 · L’era proibizionista — Niente di nuovo dall’era Obama?
Checked. The date and the event were compared with a source that was read.