Who serves as the Vice President of the United States according to the provided information?

The Vice President of the United States is Kamala Harris. She took office on January 20, 2021, and is the first female Vice President and the highest-ranking female official in U.S. history. Her election also marked the first African American and first Asian American Vice President, representing a significant milestone in U.S. politics.

The other individuals mentioned do not currently hold the office of Vice President. Mike Pence served as the Vice President under Donald Trump from 2017 to 2021, while Al Gore was Vice President during Bill Clinton's presidency from 1993 to 2001. JD Vance, while a notable political figure and U.S. Senator from Ohio, has never served as Vice President. Thus, the most accurate identification of the current Vice President, based on the information provided, is Kamala Harris.