> If you want to make a change that half the country is dead against, all the systems of balance of power will work against it (two chambers - one by headcount the other by states, filibuster, presidential veto, high threshold of consensus for changing the constitution), as it should.
Crime virtually disappeared after Prohibition was passed until the apparition of organized crime.
At the time (and still to this day) alcohol and drugs made and destroyed empires. The Dutch Empire was based on Gin. The British Empire on Opium and Rhum. Russia on Vodka. France had Bourbon.
Prohibition and the temperance movement in general enjoyed wide popular support, and many states had already introduced restrictions on alcohol before the constitution was amended.
which is why prohabition never happened.