William Clayton served as US Attorney under four different presidents and later was appointed as Chief Justice of Indian Territory. He was instrumental in achieving statehood for Oklahoma in 1907, after Native American claims were extinguished by distribution of communal lands under the Dawes Act and the breakup of tribal governments. Together with Territorial Governor Frank Frantz, Clayton took a copy of the Oklahoma Constitution to President Theodore Roosevelt after the state was admitted to the Union in 1907. Governor Frantz and Judge Clayton both lost their territorial positions when Oklahoma became a state; a new governor was elected and the Roosevelt administration appointed a new judge.