The flaw in the act that established a tax on whiskey refers to the Whiskey Excise Tax that was enacted in 1791 as part of Alexander Hamilton's plan to centralize and strengthen the federal government's fiscal system. The tax was highly unpopular, particularly among farmers and distillers in the western territories, leading to the Whiskey Rebellion in 1794. The rebellion was a protest against the tax and highlighted the tensions between the federal government and rural communities.
The tax was eventually repealed in 1802. If you have more specific aspects of this topic you'd like to discuss or further details you're interested in, feel free to ask!