the president pro temp
The U.S. Vice President is the President of the Senate. When he/she is absent or acting as President, the Senate President Pro Tempore is in charge.
The 'President Pro Tempore' is the President of the Senate, when the Vice President of the United States is absent.
The president pro tempore presides over the Senate when the Vice President is absent. The current president pro tempore (as of 5/17) is Senator Orrin Hatch of Utah.
The Pro Tempore (the leader of the senate) takes over when the vice president is absent.
When the US Vice President is absent or acting as President, his/her Senate duties fall to the US Senate President Pro Tempore, who by tradition is the longest-serving Senator of the majority party.
President of the Senate
If the vice-president is absent, some other senator, such are the pro tempore, presides over the Senate.
The Vice President of the United States is in charge of the U.S. Senate.
The President Pro Tempore
The president pro tempore is then in charge of the senate.
He/she is called the President Pro-tempore... or for short, President Pro-Temp.
President of the Senate, while the Vice President of the United States is absent.
The President Pro Tempore (which refers to a specific Senator from the majority party) presides over the Senate in the absence of the Vice President.
The Leader of the Senate is always the Vice-President. And if the Vice-President isn't there, then the President pro-tempore(temporary President) is in charge.
The Vice President of the U.S. is the leader of the House of Senate