Brian Domitrovic offers a concise history of tariffs at Forbes.com:
A tariff “for revenue” was one where a rate was set low enough for the good in question to flow into the country in sufficient quantity to bring in increasing receipts to the government. A “prohibitive” tariff was one that was so high, receipts would go up if a rate were lowered. The “Laffer curve” concept was the most discussed theorem in political-economic debates in the United States in the 19th century.
Today’s Larry Kudlow radio program: