Obama AmeriCorps

As President Barack Obama and former President Bill Clinton mark the 20th anniversary of the AmeriCorps national service program, hundreds of new volunteers are sworn in for duty at a ceremony, Friday, Sept. 12, 2014, on the South Lawn of the White House in Washington. President Barack Obama and former President Bill Clinton joined forces Friday to mark the 20th anniversary of the AmeriCorps national service program, heralding the impact volunteering can have on both individuals and the nation. (AP Photo/J. Scott Applewhite)