Coahuila y Tejas
Wharton served as a delegate to the Convention of 1832 from the District of Victoria. The convention unanimously elected him to deliver the resolutions to the legislature of Coahuila y Tejas (then a part of Mexico) in Saltillo and to the Mexican Congress in Mexico City. Following that convention's unsuccessful attempts to form a new state separate from Coahuila y Tejas, Wharton served as president of the follow-up Convention of 1833 and openly advocated complete independence from Mexico, in contrast to the moderate view held by native Texans and others like Stephen F. Austin. Wharton later served as a delegate from the Columbia district to the Texas Consultation of 1835.