Toward the end of his first term, Jackson was forced to confront the state of South Carolina on the issue of the protective tariff. The protective tariff passed by Congress and signed into law by Jackson in 1832 was milder than that of 1828, but it further embittered many in the state. In response, several South Carolina citizens endorsed the "states rights" principle of "nullification", which was enunciated by John C. Calhoun, Jackson's Vice President until 1832, in his South Carolina Exposition and Protest (1828). South Carolina dealt with the tariff by adopting the Ordinance of Nullification, which declared both the Tariff of 1828 and the Tariff of 1832 null and void within state borders.