At the end of the Civil War, Utselata moved to a place on Spavinaw Creek, near the present-day town of
Eucha, Oklahoma, where he established a farm. He occasionally practiced law before the tribal courts. In 1867 he was elected to the Senate of the
Cherokee Nation, where he represented the Delaware District until 1873 and he served as
Principal Chief of the Cherokee Nation from 1875 to 1879. During this time, he took the Anglicized name Charles Thompson. The surname honored Dr. Jeter Lynch Thompson, his predecessor in the Senate. He used that name from then until his death. During his tenure as principal chief, he feuding with the Cherokee Supreme Court, leading some to criticize him as dictatorial. He was more politically radical than his predecessors and his tenure began what historian Noah Ramage called the Cherokee Nation's "radical reconstruction" period. He was a Baptist deacon, preaching each Sunday at the church in Eucha in the
Cherokee language. The church denied him ordination as a minister because of a policy that prevented lawyers from becoming ordained ministers. This alleged disqualification was waived when he became principal chief. ==Death and burials==