contexts: Chief Justice of the United States Incumbent John Roberts since September 29 , 2005 Style The Honorable ( formal ) Mr. Chief Justice ( informal ) Your Honor ( when addressed directly in court ) Appointer Presidential nomination with Senate confirmation Term length Life tenure Constituting instrument U.S. Constitution Inaugural holder John Jay as Chief Justice of the Supreme Court September 26 , 1789 Formation March 4 , 1789
name: Chief Justice of the United States
answers.input_text: short
answers.span_text: John Roberts
questions.input_text: who is the supreme justice of the supreme court