Read the excerpt and then answer the following question.

Whereas the Congress of the United States by various acts, purporting to be acts laying duties and imposts on foreign imports, but in reality intended for the protection of domestic manufactures and the giving of bounties to classes and individuals engaged in particular employments, at the expense and to the injury and oppression of other classes and individuals, and by wholly exempting from taxation certain foreign commodities, such as are not produced or manufactured in the United States, . . . [the United States] hath raised and collected unnecessary revenue for objects unauthorized by the constitution.

--South Carolina Ordinance of Nullification,
1832

The passage states that the duties were passed to protect certain domestic manufacturers “at the expense and to the injury and oppression of other classes and individuals”.
Who was being protected by these taxes?


Which “classes and individuals” were being “oppressed”?