Calhoun and Thomas Jefferson - What's Going On?

John c. Calhoun was considered to be the while his just one and the same were the lost cause. In some ways he's building on jefferson, but is he saying it in a different way? Is he just restating the lower case f federalist tradition? What's going on with him? He uses the word nullification in 18 20, ge 20, ninen 31. And actually, south carolina was the first state to actually nullify the federal law as the tariff, and then was the firstState to secede.