Answer:
The Vice President of the United States is also the President of the Senate.
Step-by-step explanation:
The Vice President is the first in the line of succession after the President, it also presides the Senate and has the casting vote if the senate votes are a tie. He also presides the entire Congress on the joint sessions.
The Speaker of the House is chosen by the members of the House of Representatives only and it could not be a member of the House.
I hope this answer helps you.