The president.
The treasurer will up hold the position
The Vice President
The Vice President
yes
president pro tempore
The President Pro-Tem presides over the Senate when the Vice-President is not there. The Vice-President barely attends Senate meetings anymore.
The Vice President of the United States is the constitutional officer who presides over the Senate. The president pro tempore presides over the Senate if the VP is unavailable.
The House of Representatives can impeach the President. The Senate conducts the trial and the Chief Justice of the Supreme Court presides for the President.
The President pro tempore (Latin for "president for a time") typically presides in the Vice President's absence. The most senior senator of the majority party is customarily chosen to serve in this position. Like the Vice President, the President pro tempore does not normally preside over the Senate, but typically delegates the responsibility of presiding to junior senators of the majority party.
The Vice-president of the US serves as the President of the Senate, therefore he acts like a chairman would in running the meeting. If the vice-president is unavailable to perform these duties, one of the Senators is chosen from among themselves to be "President pro-tempore" of the Senate.
The senate holds all impeachment trials. If two thirds of the senate finds him guilty then the president will be removed from office. Only the House can impeach the President, not the entire Congress.
No. The Speaker of the House (of Representatives) presides over meetings of the US House of Representatives. The Vice-President of the United States presides over meetings of the US Senate .