Joe Biden was sworn in as the 46th president of the United States on January 20, 2021. Biden, who was sworn in by Chief Justice John Roberts, is the 69th person to serve as president. Biden is the oldest president in U.S. history, having taken office at the age of 78.
Biden's election as president was fueled in part by his long history of involvement in American politics. Biden has served in the Senate since 1973, representing the state of Delaware for a total of 36 years. Biden first ran for president in 1988, but lost the Democratic nomination to Michael Dukakis. He ran again in 2008, but again lost the Democratic nomination to Barack Obama. In 2020, Biden ran for president and won the nomination, choosing Kamala Harris as his running mate.
Biden is a proponent of progressive values and has served in government for more than four decades advocating for the rights of workers, women, and minorities. His career in politics has been marked by his commitment to social justice, civil rights, and the environment.