However, Anslinger began to capitalize on fears about marijuana while pressing a public relations campaign to encourage the passage of uniform anti-narcotics legislation in all 48 states. He later lobbied in favor of the Marijuana Tax Act of 1937.
Then, between 1914 and 1925, twenty-six states passed laws prohibiting the plant. The anti-marijuana laws were uncontroversial and passed, for the most part, with an absence of public outcry or even legislative debate.
Anti-Marijuana Group Strikes Back in Pot Billboard …
But the practice of smoking marijuana leaf in cigarettes or pipes was largely unknown in the United States until it was introduced by during the first few decades of the twentieth century. That introduction, in turn, generated a reaction in the U.S., tinged perhaps with anti-Mexican xenophobia.