Supreme Court: National Prohibition Cases Upheld 18th Amendment, Volstead Act

• The Supreme Court continues to address alcohol-related laws, with recent and upcoming cases touching on historical and contemporary regulations.
• The 18th Amendment, effective January 1920, established a nationwide prohibition on the manufacture, sale, transportation, importation, and exportation of intoxicating liquors.
• The Volstead Act was enacted by Congress to enforce the 18th Amendment during the Prohibition era, which lasted from 1920 to 1933.
• In the National Prohibition Cases, the Supreme Court upheld the constitutionality of both the 18th Amendment and the Volstead Act against challenges from states and brewing companies.
• The Court clarified that the two-thirds vote required to propose a constitutional amendment refers to two-thirds of the members present, not the entire membership of Congress.

In its comprehensive decision, the Court affirmed the broad authority of Congress to enact both the constitutional amendment and its enforcing legislation.

The nation's highest court frequently grapples with complex legal questions surrounding alcohol and its societal impact, a tradition that continues into the modern era. During its 2025-26 term, for instance, justices delved into the historical drinking habits of the Founding Fathers while deciding a case concerning a statute that bars habitual drug users from possessing firearms.

Looking ahead, the Court may revisit the topic of early American alcohol laws if it agrees to hear a case concerning a 19th-century prohibition on the at-home production of distilled spirits. This ongoing engagement underscores a long and significant history between the Supreme Court and alcohol-related jurisprudence, perhaps most famously exemplified by the legal battles surrounding national Prohibition.

A pivotal moment in American legal history arrived with the implementation of the 18th Amendment in January 1920. This constitutional change, widely recognized as the country's most impactful legislation concerning alcoholic beverages, broadly outlawed "the manufacture, sale, or transportation of intoxicating liquors within" the United States.

Its prohibitions also extended to the importation and exportation of alcohol, establishing a comprehensive federal ban. To provide the necessary enforcement mechanisms for this sweeping amendment, Congress subsequently enacted the Volstead Act. The period of national Prohibition, marked by these legislative efforts, spanned from 1920 until 1933, profoundly reshaping American society and generating numerous legal challenges that ultimately reached the Supreme Court.

Throughout the thirteen years of Prohibition, the Supreme Court was tasked with interpreting and upholding the 18th Amendment, deciding several pivotal cases. Among the most significant were the National Prohibition Cases, a consolidated proceeding where the Court addressed seven distinct lawsuits.

These legal actions were initiated by various states and brewing companies, all seeking to challenge the fundamental constitutionality of both the 18th Amendment itself and the Volstead Act, the congressional statute designed to implement it. In its comprehensive decision, the Court affirmed the broad authority of Congress to enact both the constitutional amendment and its enforcing legislation. The justices systematically dismissed various objections raised by the plaintiffs, including critical challenges to the legislative process by which constitutional amendments are proposed.

A key aspect of the National Prohibition Cases ruling involved the Supreme Court's clarification of the procedural requirements for proposing constitutional amendments. The Court specifically addressed arguments questioning the validity of Congress's voting process for the 18th Amendment.

It definitively held that the constitutional mandate for a "two-thirds vote" to propose such an amendment is satisfied when "two-thirds of the members present" in each chamber support the proposal. This interpretation rejected the alternative argument that the requirement necessitated approval by "two-thirds of the entire membership" of Congress, thereby establishing a crucial precedent for future amendment proposals. This ruling underscored the Court's role in defining the precise mechanisms of constitutional change.

Source: Original reporting via legal analysis