He was elected an Anti-Administration to the United States House of Representatives in 1792, serving from 1793 to 1805. New moved to Elkton, Kentucky, and was elected back to the House Democratic-Republican from Kentucky in 1810, serving from 1811 to 1813. He was elected back a third time in 1816, serving from 1817 to 1819 and a fourth time in 1820, serving from 1821 to 1823. Afterwards, he engaged in agricultural pursuits and died at his estate called "Dunheath" near Elkton, Kentucky, on March 2, 1833, and was interred in the family cemetery on the estate.