The American Whig–Cliosophic Society (Whig-Clio) is a political, literary, and debating society at Princeton University and the oldest debate union in the United States. Its precursors, the American Whig Society and the Cliosophic Society, were founded at Princeton in 1769 and 1765 by James Madison, William Paterson, Oliver Ellsworth, and Aaron Burr. The two original societies continue as "houses" within the larger American Whig–Cliosophic Society, with Whig considered the more liberal house and Clio the more conservative.