Joe Biden Jr. (born November 20, 1942) is an American politician. He is the 46th and current President of the United States since 2021. Biden was also the 47th Vice President of the United States from 2009 through 2017 during the Barack Obama presidency. Before becoming Vice President, he was a U.S. Senator from Delaware from 1973 to 2009. He had served in the Senate longer than any other Vice President.