Vice President of the United States, HOW A VICE PRESIDENT IS CHOSEN. Some people do not know HOW a Vice President becomes Vice President. I'm not sure why they don't research how it works. If something were to happen to Vice President Pence, President Trump has to follow the Constitution. "Whenever there is a VACANCY in the office of the Vice President, the President shall nominate a Vice President who shall take office upon CONFIRMATION by a MAJORITY VOTE of BOTH HOUSES OF CONGRESS.. The Vice President of the United States is the second-in-command to the President. The President is the commander in chief. The Vice President's responsibilities include filling in for the President, and acting as president of the U.S. Senate. Like the President, the Vice President serves a term of four years and can be re-elected. The Vice President must meet the same requirements as the President, being born a U.S. citizen, at least 35 years old, and must have lived in the United States for 14 years. The current Vice President is Mike Pence.  Duties The Vice President only has one official duty. That is to preside over the Senate and to cast a vote in the Senate if there is a tie. However, recently the duties have been seen to include being a member of the President's Cabinet, or a top advisor to the President (Dick Cheney was the Vice President to take this duty the most seriously). The Vice President is a member of the National Security Council and serves on the board of the Smithsonian. Also, the 25th Amendment says that the Vice President can act as President if the President is incapacitated (can not do the job of President). For example, Vice President George H.W. Bush acted as President when Ronald Reagan was having an operation.  If the Vice President dies or becomes President Prior to 1967, if the President died, it was unclear whether the Vice President was President or merely Acting President (though John Tyler and others who took over the office said they were not merely Acting President). Also, if the Vice President died, nobody was Vice President until a new one was ELECTED. This was changed after the assassination of John F. Kennedy with the 25th Amendment to the United States Constitution. If the President died, the Vice President was clearly the President. Also, if the Vice President dies, resigns, or becomes President, the President can appoint a Vice President if he is CONFIRMED by a MAJORITY VOTE of both the House of Representatives and the U.S. Senate. This has happened twice: first, when Gerald Ford became Vice President after the resignation of Spiro Agnew, and second, when Nelson Rockefeller became Vice President after Gerald Ford became President when Richard Nixon resigned." FROM SIMPLE ENGLISH WIKIPEDIA https://simple.wikipedia.org/wiki/Vice_President_of_the_United_States