The modern vice presidency is a position of significant power and is widely seen as an integral part of a president’s administration. The presidential candidate selects the candidate for the vice presidency, as their running mate in the lead-up to the presidential election. While the exact nature of the role varies in each administration, since the vice president’s service in office is by election, the president cannot dismiss the vice president, and the personal working-relationship with the president varies, most modern vice presidents serve as a key presidential advisor, governing partner, and representative of the president.
Amazing how many people here are convinced that the vice president sets and controls policy.
https://en.wikipedia.org/wiki/Vice_President_of_the_United_States