The President of the United States Senate is the Vice President of the United States. As of now, this position is held by Vice President Kamala Harris, who serves as the President of the Senate by constitutional design

. The President Pro Tempore of the U.S. Senate, who presides in the Vice President's absence and is the second-highest-ranking official in the Senate, is currently Chuck Grassley, elected on January 3, 2025

. In summary:

• President of the Senate (U.S. Vice President): Kamala Harris
• President Pro Tempore of the Senate: Chuck Grassley (since January 3, 2025)