The Buried Report: How the La Guardia Commission Disproved Everything in 1944 and Was Silenced for Eighty Years
By 1938, the United States had successfully weaponised a fiction. The Marihuana Tax Act had passed the previous year on the back of Harry Anslinger's fabricated congressional testimony and the cinematic hysteria of Reefer Madness. The public was terrified and the Federal Bureau of Narcotics was expanding its budget. But the Mayor of New York City, Fiorello La Guardia, was fundamentally sceptical. He commissioned science. The science reported back in 1944 and demolished every claim Anslinger had made. Anslinger did not respond with counter-evidence. He responded with bureaucratic violence. The report was buried. The science was frozen. The lie continued for another eighty years.
Fiorello La Guardia governed New York City from 1934 to 1945. He was a Republican progressive, a former US Congressman, a lawyer, and a pragmatist. He governed one of the most complex, multi-ethnic, densely populated cities on earth, and he was not in the habit of accepting federal press releases as substitutes for evidence. When Harry Anslinger's Federal Bureau of Narcotics announced that cannabis was triggering a wave of homicidal insanity and moral collapse across American cities, La Guardia looked at his city and observed no such wave. He observed a diverse population using a variety of substances with the full range of social consequences. He observed that the catastrophic epidemic promised by the federal government was not occurring in front of him. Rather than accepting the assertion, he commissioned a study. What the study found is one of the most important and most deliberately obscured documents in the history of public health.
La Guardia Commission 1938 New York Academy Medicine cannabis study methodology Harlem Goldwater Memorial Hospital clinical trials sociological
In 1938, La Guardia formally requested that the New York Academy of Medicine assemble a scientific commission to conduct a comprehensive investigation into the sociological, medical, and psychological realities of cannabis use in New York City. The New York Academy of Medicine was, and remains, one of the most prestigious independent medical research institutions in the United States, founded in 1847 and committed by its charter to independent, evidence-based inquiry.
The commission assembled was genuinely multidisciplinary. It included pharmacologists, psychiatrists, sociologists, public health officials, and clinical researchers. The methodology was rigorous by the standards of its time and would remain credible by the standards of subsequent decades. The researchers did two things that Anslinger had not done and could not do: they went into the field, and they went into the laboratory.
In the field, the commission researchers embedded themselves in the jazz clubs and social spaces of Harlem, observing cannabis use in its actual social context over a sustained period. They documented patterns of use, social behaviour, frequency, and the observable effects on individuals and communities. What they did not observe was the epidemic of violence, insanity, and moral collapse that Anslinger had described to Congress. What they observed was a community using a recreational substance with the same range of individual outcomes as alcohol, including moderated social use by the majority and problematic use by a minority.
In the laboratory, the commission conducted controlled clinical trials at Goldwater Memorial Hospital on Welfare Island, New York. The trials tested the physiological and psychological effects of cannabis on human subjects under controlled conditions, measuring blood pressure, pulse, respiratory function, cognitive performance, motor coordination, and psychological state at varying doses. The trials produced the first rigorous clinical dataset on human cannabis pharmacology assembled in the United States and remain a foundational reference in the history of cannabis research.
The commission worked for six years. Its report was published in 1944 under the full title: The Marihuana Problem in the City of New York, by the Mayor's Committee on Marihuana of the New York Academy of Medicine. It is available in full at the Internet Archive and has been cited in academic drug policy literature continuously since its publication. It is not a lost document. It is a suppressed one.
La Guardia Commission findings 1944 cannabis no violence no insanity no gateway no addiction no youth epidemic no physical degradation
The La Guardia Commission Report did not hedge its conclusions. It was a scientific document and it stated its findings with the precision that scientific documentation requires. Each finding directly contradicted a specific claim that Harry Anslinger had placed before Congress under oath in 1937. The reader is invited to read the original report, freely available at archive.org, and assess every finding against the primary source.
The report concluded that cannabis use does not alter the basic personality structure of the individual, does not induce violence, and is not a determining factor in the commission of major crimes. The claims of cannabis-induced homicidal rage submitted to Congress by Anslinger through his Gore File were, in the Commission's assessment, unsupported by any clinical or sociological evidence.
Anslinger's claim: DemolishedThe Commission found that cannabis smoking does not lead to addiction in the medical sense of the word and does not lead to the use of morphine, heroin, or cocaine. The report effectively destroyed the gateway drug theory seven years after the Marihuana Tax Act passed and seventeen years before the 1961 UN Single Convention enshrined the gateway assumption in international law. The law was not updated.
Anslinger's claim: DemolishedThe Commission found that juvenile delinquency is not associated with cannabis smoking. The moral panic around cannabis and American youth, which had been the central emotional proposition of the Reefer Madness propaganda and Anslinger's congressional campaign, was not borne out by the Commission's sociological research in the communities where cannabis use was most prevalent.
Anslinger's claim: DemolishedThe clinical trials at Goldwater Memorial Hospital found that prolonged cannabis use does not result in physical, mental, or moral degradation. The physiological measurements taken during the controlled trials showed no significant abnormalities in blood pressure, pulse, or respiratory function attributable to cannabis use. The clinical data directly contradicted the physical deterioration narrative central to both Reefer Madness and Anslinger's testimony.
Anslinger's claim: DemolishedAnslinger suppression La Guardia Report 1944 unscientific attack New York Academy Medicine cannabis research frozen federal decree
The publication of the La Guardia Commission Report in 1944 presented an existential threat to Harry Anslinger and the Federal Bureau of Narcotics. If the public accepted peer-reviewed science over manufactured panic, the entire enforcement apparatus of prohibition would lose its justification. Seven years of federal drug enforcement, an expanding bureau with an expanding budget, and the institutional credibility of the Commissioner himself were contingent on the public not reading this report and accepting its conclusions.
Anslinger did not respond with counter-research. He did not commission a competing study, challenge the methodology in a peer-reviewed forum, or present clinical data that contradicted the Commission's findings. He responded with bureaucratic power.
The science was settled in 1944. The state did not lack the facts. It had the facts and buried them. Every cannabis prosecution in every country since 1944 has been conducted on the basis of claims that a multidisciplinary scientific commission had already formally demolished.
La Guardia Report suppression cost consequences 1961 UN Single Convention Nixon War on Drugs Mauritius Dangerous Drugs Act millions lives criminal records
The tragedy of the La Guardia Commission Report is not merely that it was ignored in 1944. It is the accounting of what its suppression permitted to happen across the following eight decades. Each item in the chain that follows from the burial of this report is documented and verifiable.
The La Guardia Commission Report is freely available today at archive.org. It is 246 pages. It contains the methodology, the clinical data, the sociological observations, and the conclusions of six years of rigorous scientific work by the New York Academy of Medicine, commissioned by one of the most effective and clear-eyed municipal administrators in American history. It has been available for eighty-two years. It has not been cited in any Mauritian parliamentary debate on drug policy. It was not cited when the Dangerous Drugs Act 2000 was passed. It was not cited when the 2022 amendment was drafted. It is in the public record. The decision not to engage with it is not ignorance. It is institutional choice.
To read the La Guardia Report today is to understand that the war on cannabis was never a war on a drug. It was a war on empirical truth, conducted by a federal bureaucrat who understood that his institutional survival depended on the public not reading a document that nine scientists had spent six years producing. The scientists did their job. The bureaucrat did his. The law that resulted is still in force in Mauritius in 2026.
The Report itself: Mayor's Committee on Marihuana, New York Academy of Medicine, "The Marihuana Problem in the City of New York," 1944. Full text freely available at: archive.org/details/marihuana_problem. 246 pages. Six years of research. Available to any reader in the world at no cost.
Anslinger's suppression campaign: McWilliams JC, "The Protectors: Harry J. Anslinger and the Federal Bureau of Narcotics, 1930-1962," University of Delaware Press, 1990. The standard academic biography of Anslinger, documenting his response to the La Guardia Report and the research freeze he imposed. Also: Sloman L, "Reefer Madness: A History of Marijuana," Bobbs-Merrill, 1979.
The American Journal of Psychiatry condemnation: Bowman KM, Simon A, "A Clinical Study of Marihuana Intoxication." American Journal of Psychiatry, 1944. The journal published this as a counterweight to the La Guardia Report at a time when Anslinger's bureau was applying federal pressure to medical institutions. The publication did not follow standard peer review procedures for assessing the Commission's clinical data.
Academic assessment of the suppression: Grinspoon L, "Marihuana Reconsidered," Harvard University Press, 1971. The first major academic re-examination of the La Guardia Report, published twenty-seven years after the report's suppression. Also: Musto DF, "The American Disease: Origins of Narcotic Control," Oxford University Press, 1999.
The research freeze: Bonnie RJ, Whitebread CH, "The Marihuana Conviction: A History of Marihuana Prohibition in the United States," University of Virginia Press, 1974. Documents Anslinger's decree halting independent cannabis research and its consequences for American pharmacological science across the following decades.
This is the thirteenth article in The Colonised Plant: The Cannabis Edition, June 2026, and the third in Chapter Three: The Criminalisation. The next article examines the UN pressure and the architecture of global prohibition: how the international drug control system was built, how it has been maintained against the scientific evidence, and what the 2020 reclassification actually means for countries still operating under the 1961 framework. The complete edition is published at themeridian.info/june-2026.
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