Primary support: complete Statutes at Large scan, 41 Stat. 305–323, especially 305 and 307–308; veto-override record appears at 323.
The National Prohibition Act became law on October 28, 1919 over President Woodrow Wilson’s veto; it enforced wartime prohibition, defined intoxicating liquor for Titles II and III to include beverage-suitable liquids containing one-half of one percent alcohol by volume or more, and established the federal permit and enforcement framework for constitutional Prohibition.
All 20 scan pages visually reviewed; searchable text checked; Act and adjacent-statute boundaries confirmed.
The statute contains exceptions and regulated nonbeverage uses. Historical text was later amended and ultimately displaced by Repeal; do not present it as current law.
The enacted statutory text directly supplies the date, titles, definition, exceptions, and enforcement structure.
The full 20-page National Prohibition Act was visually reviewed; separate citations and excerpts anchor the short title and enforcement purpose, statutory 0.5-percent definition, and veto override.