FBI agents are not paid in hourly wages, they are paid through the federal government system GS ratings which provides agents an annual salary rating for years served.
The tariff of the United States, like all actual protective tariffs, is partly revenue and partly protective, its original purpose of yielding revenue having been subordinated to that of giving protection, until it may now be best described as a protective tariff yielding incidental revenue.
There are two basic types of tariffs imposed by governments on imported goods. First is the ad valorem tax which is a percentage of the value of the item. The second is a specific tariff which is a tax levied based on a set fee per number of items or by weight. Tariffs are generally imposed for one of four reasons: 1  To protect newly established domestic industries from foreign competition. 2  To protect aging and inefficient domestic industries from foreign competition. 3  To protect domestic producers from dumping by foreign companies or governments. 4  To raise revenue.