From which school did Barack Obama earn his undergraduate degree?

Which state did Barack Obama represent in the U.S. Senate? Which state did Joe Biden represent in the U.S. Senate? Which state did James Monroe represent in the U.S. Senate? From which school did John F. Kennedy earn his undergraduate degree? From which school did George W. Bush earn his undergraduate degree? From which school did George H. W. Bush earn his undergraduate degree? From which school did Bill Clinton earn his undergraduate degree? From which school did William Howard Taft earn his undergraduate degree?