President Jackson responded with a proclamation denying the right of nullification, and asked Congress for authority to collect the revenue in South Carolina by force if necessary.
He became prominent, politically, during the nullification excitement of 1832-1833, as a vigorous opponent of nullification, and from 1836 to 1845 he sat in the United States Senate as a Unionist Democrat.
Green, however, continued to edit it in the Calhoun interest until 1835, and gave vigorous support to that leader's nullification views.
The tariff of 1828 aroused bitter opposition in South Carolina, and called from Vice-President Calhoun the statement of the doctrine of nullification which was adopted by the South Carolina legislature at the close of the year and is known as the South Carolina Exposition.
He returned to Accomack county, Va., in 1830, and served in the National House of Representatives in 1833-1837 as an anti-nullification Democrat, but broke with the party on the withdrawal of the deposits from the United States Bank, and was re-elected to Congress in 1837, 1839 and 1841 as a Whig, and in 1843 as a Tyler Democrat.