Tariff
In contrast, in economic theory tariffs are viewed as a primary element in international trade with the function of the tariff being to influence the flow of trade by lowering or raising the price of targeted goods to create what amounts to an artificial competitive advantage. When tariffs are viewed and used in this fashion, they are addressing the country's and the competitors' respective economic healths in terms of maximizing or minimizing revenue flow rather than in terms of the ability to generate and maintain a competitive advantage which is the source of the revenue. As a result, the impact of the tariffs on the economic health of the country are at best minimal but often are counter-productive.
Walker tariff
The Walker Tariff was a set of tariff rates adopted by the United States in 1846. The Walker Tariff was enacted by the Democrats, and made substantial cuts in the high rates of the "Black Tariff" of 1842, enacted by the Whigs. It was based on a report by Secretary of the Treasury Robert J. Walker. The Walker Tariff reduced tariff rates from 32% to 25%; it coincided with Britain's repeal of the Corn Laws and led to an increase in trade. It was one of the lowest tariffs in American history.