The admission of Kansas as a state required a constitution be submitted to Congress with the approval of a majority of its residents. Under President Pierce, a series of violent confrontations escalated over who had the right to vote in Kansas. The situation drew national attention, and some in Georgia and Mississippi advocated secession should Kansas be admitted as a free state. Buchanan chose to endorse the pro-slavery Lecompton government.[64]
Buchanan appointed Robert J. Walker to replace John W. Geary as Territorial Governor, with the expectation he would assist the proslavery faction in gaining approval of a new constitution.[65] However, Walker wavered on the slavery question, and there ensued conflicting referendums from Topeka and Lecompton, where election fraud occurred. In October 1857, the Lecompton government framed the pro-slavery Lecompton Constitution and sent it to Buchanan without a referendum. Buchanan reluctantly rejected it, and he dispatched federal agents to arrange a compromise. The Lecompton government agreed to a referendum limited solely to the slavery question.[66]
Despite the protests of Walker and two former Kansas governors, Buchanan decided to accept the Lecompton Constitution. 