Who is the current presiding officer of the Senate and what is their role?
1) The current presiding officer of the Senate is the Vice President of the United States, and their role is to preside over the Senate and cast a vote in the event of a tie.
2) The current presiding officer of the Senate is the Speaker of the House of Representatives, and their role is to preside over the Senate and cast a vote in the event of a tie.
3) The current presiding officer of the Senate is the President pro tempore, and their role is to preside over the Senate and cast a vote in the event of a tie.
4) The current presiding officer of the Senate is the Majority Leader, and their role is to preside over the Senate and cast a vote in the event of a tie.