As the race for the White House heats up, Republican vice presidential nominee JD Vance and his Democratic rival Tim Walz are campaigning fiercely to grab the second-highest office in the United States. One of them will take over the responsibilities of Kamala Harris, the incumbent US VP who is running for president. Traditionally, the position of the vice president has been relatively insignificant, with several previous officeholders calling themselves unimportant. However, this has changed in recent years, with the vice presidents expanding their duties and becoming more influential than ever. But the big question is, what exactly does the US vice president do? Here we explain.
