Second inauguration of Barack Obama 1937, the 4-year term of the President and Vice President have ended and begun at noon on January 20, as prescribed by the Twentieth Amendment to the United States Constitution. Because January 20, 2013, fell on a Sunday, both Obama and Biden were officially sworn in privately, and then again the following day in a public ceremony. This was the seventh time since the start of James Monroe's second term in office, in 1821, that the oath of office was officially administered in a Sunday private ceremony. Chief Justice John Roberts administered the oath of office to the President on
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