Presidential transition of Barack Obama he was sworn in as Vice President on January 20, 2009. Although he was sworn in for a seventh Senate term in early January 2009, he resigned from the seat on January 15, 2009, having served just over 36 years in the body. On November 24, 2008, Delaware Gov. Ruth Ann Minner announced that Ted Kaufman would serve as Biden's appointed replacement. Kaufman was sworn in on January 16, 2009. A special election was held in November 2010, which elected Democratic candidate Chris Coons. During his abbreviated final term in the Senate, Biden went on a diplomatic fact-finding trip to
Barack Obama 2015, that inmates sentenced in US federal custody declined by 5% under Obama. This is the largest decline in sentenced inmates in US federal custody since Democratic President Jimmy Carter. By contrast, the federal prison population increased significantly under presidents Ronald Reagan, George H. W. Bush, Bill Clinton, and George W. Bush. Obama left office in January 2017 with a 60% approval rating. A 2017 C-SPAN "Presidential Historians Survey" ranked Obama as the 12th-best US president. The Barack Obama Presidential Center is Obama's planned presidential library. It will be hosted by the University of Chicago and located in Jackson Park