Prohibition history
The Volstead Act.
The Volstead Act was the law that made the 18th Amendment operational. Passed over President Wilson’s veto on 28 October 1919, it defined “intoxicating liquor” as anything above one half of one per cent alcohol, set out the enforcement machinery, and carved out the exemptions that half of Prohibition’s illegal supply would run through.
One half of one per cent
Everything turns on that number. The brewers had lobbied in the confident expectation that “intoxicating” would be set somewhere around 2.75 per cent, which would have left beer alive and killed only spirits. Wayne Wheeler of the Anti-Saloon League, who had a large hand in drafting the bill, set it at 0.5 per cent — below the strength of several things people drink without noticing — and the brewing industry ceased to exist as a legal business on the day it took effect.
Andrew Volstead, a Minnesota Republican and chairman of the House Judiciary Committee, put his name to it and spent the rest of his career attached to it. He lost his seat in 1922.
Wilson vetoed the bill, objecting mainly that it bundled wartime prohibition together with the constitutional kind. The House overrode him the same day; the Senate followed within twenty-four hours.
The exemptions
| Sacramental wine | Permitted for religious use, in quantities certified by clergy. Withdrawals rose sharply after 1920. |
|---|---|
| Medicinal liquor | Available on a physician’s prescription, one pint per patient per ten days, on a numbered federal form. |
| Industrial alcohol | Legal for manufacturing, required to be denatured — and diverted on an enormous scale. |
| Fruit juices at home | A household could make non-intoxicating cider and fruit juice. In practice, this meant wine. |
| Existing private stocks | Liquor bought before January 1920 stayed legal to keep and to drink at home. |
The fruit-juice clause
Section 29 allowed a householder to make up to two hundred gallons a year of “non-intoxicating cider and fruit juice”. What non-intoxicating meant in a barrel nobody was inspecting is a question the Act declined to answer, and California’s growers answered it instead.
Grape acreage in California rose sharply through the 1920s rather than collapsing. Concentrated grape blocks — sold under brand names, shipped nationally, and labelled with careful instructions about precisely which conditions would cause the product to ferment into wine, so that the purchaser could be sure to avoid them — became an industry. It is the funniest document in the whole period and it was entirely legal.
Two hundred gallons is roughly a thousand bottles a year per household. The clause was not a loophole so much as a parallel licensing regime for anyone willing to do the work at home.
The prescription business
Medicinal whiskey was real medicine in the pharmacology of the day, prescribed for everything from flu to anaemia, and the Act kept it available. The paperwork — a numbered federal prescription form, a pint per patient per ten days — looked tight. It was not.
Doctors wrote. Pharmacies dispensed. A handful of distilleries were licensed to keep making whiskey for the trade and consolidated the stocks of the ones that had closed. The drugstore chains of the era grew through the 1920s for several reasons, of which this was unmistakably one, and the stock of “medicinal” spirits aged in bonded warehouses is a large part of why anything drinkable existed in America in 1933.
The sacramental problem
Wine for religious use was exempt, and the exemption was administered on trust. A congregation’s clergy certified how much it needed; the federal government issued permits against that certification; licensed dealers supplied it. Nobody counted the congregations.
Withdrawals of sacramental wine rose substantially after 1920, and the Treasury’s own agents said plainly that a large share of it was not reaching any altar. New congregations appeared with convenient speed. Permits were forged, traded and overdrawn. It was one of the few forms of diversion that required no violence, no boats and no stills, and it kept several California wineries alive through the entire period — Beaulieu in Napa being the best-documented case.
The point is not that religion was a sham. It is that an exemption written on trust, in an economy where the legal alternative had been abolished, will be used by everybody who can reach it.
Enforcement, and the padlock
The Act’s most effective weapon was not the arrest, it was the injunction. A premises used for selling liquor could be declared a common nuisance and padlocked by court order for up to a year — no criminal conviction required, and the landlord suffered whether or not he knew. Padlock proceedings closed tens of thousands of premises over the decade and were far more feared by proprietors than the fines.
It also explains the architecture. If the room can be closed for a year by a judge who never has to prove anything beyond use, you do not invest in the room. You rent it, you fit it cheaply, you put the bottles somewhere they can be dumped, and you are ready to open two streets away.
Who was supposed to enforce it
Not the FBI, which barely existed in the form we know, and not a dedicated agency. Prohibition enforcement was handed to the Bureau of Internal Revenue — the tax collector — on the logic that liquor had always been a revenue question. The Prohibition Unit it created had a few thousand agents to police a continent, and until 1927 those agents were exempt from civil service rules, which meant the jobs were handed out as political patronage.
The salary was around $2,000 a year in a trade where a single night’s protection could be worth more than that. The arithmetic was not subtle and neither were the results: roughly one agent in twelve was dismissed for corruption over the life of the Act, and that figure counts only the ones who were caught by an administration with no appetite for counting.
The Coast Guard did the maritime work and did it seriously, expanding enormously through the 1920s to chase rum-runners. Customs covered the land borders. Local police did as much or as little as their mayors wanted, which in Chicago, Detroit, New York and Philadelphia often meant very little indeed.
The end of it
The Volstead Act was amended before it was buried. The Cullen–Harrison Act of March 1933 redefined “intoxicating” upward to 3.2 per cent by weight, which was all it took to make beer legal again from 7 April — six weeks after Roosevelt’s inauguration and eight months before the 21st Amendment finished the job.
The Act itself was never formally repealed in full. Repeal of the 18th Amendment simply removed the constitutional authority it rested on, and the remnants were superseded by the liquor control legislation every state wrote in 1933 and 1934 — which is why American alcohol law is still fifty different systems rather than one.