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The Prohibition Unit is established under the Bureau of Internal Revenue.
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35,000 gallons of wine from the North Cucamonga Winery on Alameda Street is poured down the drains by Revenue agents in accordance with the new law.
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Prohibition in the United States goes into effect. By this time 33 states have already adopted state-wide prohibition by referendum, by statute, or by state constitutional amendment.
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Mabel Walker Willebrandt is named Assistant Attorney General by President Warren G. Harding and becomes chief enforcer of the Volstead Act. During her eight-year tenure, she notes that high profile bootleggers never file tax returns.
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Using a shrimping business as a cover, bootlegger Anthony Cornero smuggles Canadian whiskey into Southern California.
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California passes the Wright Act, allowing local enforcement of the Volstead Act.
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In an attempt to crack down on the movement of liquor in their city, Torrance police set up an early version of sobriety checkpoints.
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The Los Angeles Examiner estimates that $50 million dollars worth of liquor has been smuggled into California from Canada.
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Returning from Mexico with approximately 1,000 cases of rum, Anthony Cornero is arrested and sentenced to two years in prison.
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The Prohibition Unit becomes an independent entity within the Department of the Treasury, changing its name to the Bureau of Prohibition.