2/3 vote of the senators that are present about 66.6%
The three signers are: Josiah bartlett, Matthew Thornton,and William wipple
In November, 1832, South Carolina took "the Ordinance of Nullification", declaring the tariffs null, void, and nonbinding in the state. U.S. Pres.
Because of that Andrew Jackson issued a proclamation that asserted the supremacy of the federal government.
It's a free enterprise system because of the capitalistic nature of the US economy