Who is currently the Chief Justice of the United States?

John Roberts serves as the Chief Justice of the United States, having been appointed to the position in 2005. As Chief Justice, he holds a pivotal role in the judicial system, presiding over the Supreme Court and guiding deliberations on cases that significantly impact American law and society. His responsibilities also include leading the Court's public sessions, organizing the Court’s calendar, and deciding who writes opinions for the Court.

Roberts' tenure has included overseeing numerous landmark cases and influencing the direction of the Court through his leadership style and judicial philosophy. This position is distinctively influential in shaping legal precedents in the United States, making Roberts a central figure in American jurisprudence today. Other options reflect past or current justices, but they do not hold the title of Chief Justice at this time.