Who is currently the Chief Justice of the United States?

The position of Chief Justice of the United States is held by John Roberts. He has served in this role since September 29, 2005, after being nominated by President George W. Bush. As Chief Justice, Roberts presides over the Supreme Court, leads its administrative functions, and has significant influence over the court's decisions and operations. His role also includes deciding which cases the Supreme Court will hear, guiding discussions during oral arguments, and frequently writing the opinions of the Court.

The other individuals listed have had significant roles within the judiciary, such as serving as Associate Justices of the Supreme Court, but none currently hold the title of Chief Justice. Elena Kagan and Clarence Thomas serve as Associate Justices, while Ruth Bader Ginsburg, who passed away in September 2020, was an Associate Justice known for her advocacy of gender equality and civil liberties. Their importance in the judiciary is substantial, but they do not occupy the Chief Justice position, which is currently filled by John Roberts.