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Chief Justice of the United States John G. Roberts, Jr. administers the oath of office to President Donald Trump during the 58th Presidential Inauguration on Jan. 20, 2017 in Washington, D.C. (Olivier Douliery/Abaca Press/TNS)

Chief Justice of the United States John G. Roberts, Jr. administers the oath of office to President Donald Trump during the 58th Presidential Inauguration on Jan. 20, 2017 in Washington, D.C. (Olivier Douliery/Abaca Press/TNS)