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.
PROTECTIVE tariffs differ from revenue tariffs in their object, which is not so much that of obtaining revenue as that of protecting home producers from the competition of imported commodities. The two objects, revenue and protection, are not merely distinct, but antagonistic.