Who is the official leader of the US Senate?

The official leader of the U.S. Senate is the Vice President of the United States. This role is outlined in the Constitution, where it states that the Vice President serves as the President of the Senate. In this capacity, the Vice President does not actively participate in the day-to-day operations of the Senate but is responsible for presiding over Senate sessions and casting tie-breaking votes when necessary. This role emphasizes the Vice President's constitutional responsibility to maintain order in the Senate and ensure the proper conduct of Senate proceedings.

While the Majority Leader plays a significant role in guiding the legislative agenda and managing party strategy within the Senate, it is the Vice President who holds the official title of President of the Senate. The Speaker of the House directs the House of Representatives and is, therefore, not relevant to the Senate leadership. The Chief Justice, as the head of the judicial branch, oversees the Supreme Court and does not have a leadership role in either chamber of Congress. Thus, the Vice President's role as the official leader of the U.S. Senate is firmly grounded in constitutional authority.