Who serves as the President of the Senate?

The President of the Senate is the Vice President of the United States. This role is established in the U.S. Constitution, specifically in Article I, Section 3. The primary function of the Vice President in this capacity is to preside over Senate sessions, particularly to cast a tie-breaking vote when necessary. While the Vice President does not participate in Senate debates or vote on legislation except in the event of a tie, their position is crucial in maintaining order and overseeing proceedings.

The other roles mentioned may hold significant responsibilities within their respective chambers, such as managing legislative agendas and coordinating party strategies, but they do not have the constitutional authority to preside over the Senate. The Majority Leader and Senate Floor Leader focus on legislative leadership within the Senate but do not hold the title of President. Meanwhile, the Speaker of the House is the leader of the House of Representatives, completely separate from the Senate's structure.