After the war, the two factions of the Cherokee tried to negotiate separately with the US government Southern Treaty Commission. The commissioner of Indian Affairs, Dennis N. Cooley, was persuaded to believe allegations by Stand Watie and Elias Cornelius Boudinot that Ross was a dictator who did not truly represent the Cherokee people. Even though his health was worsening, Ross left Park Hill, where he was staying with his niece, on November 9, 1865, to meet with President Andrew Johnson. Johnson instructed Cooley to reopen negotiations with the Cherokee and to meet only with the pro-Union faction, headed by John Ross. Ross died on August 1, 1866 in Washington, D.C. while still negotiating a final treaty with the federal government. However, Ross had by then persuaded Johnson to reject a particularly harsh treaty version favored by Cooley.