tar·iff noun \ˈter-əf, ˈta-rəf\
Definition of TARIFF
a : a schedule of duties imposed by a government on imported or in some countries exported goods
b : a duty or rate of duty imposed in such a schedule
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A tax on consumers usually imposed to protect cronies of Congressmen. Tariffs never spur economic development, but they do, sometimes, serve to keep inefficient businesses alive at the expense of others.
America's sugar tariffs, for example, have driven about twice as many candy manufacturing jobs abroad as the number of sugar-producing jobs they've saved.
Tariffs on cheap Chinese tires have driven the price up 30%, but not a single American tire manufacturer has restored production to the low-end market.
Tariffs are a means for the government to collect revenue, but they do not spur domestic production. If you disagree, please cite a specific example.