Democratic presidential candidate Hillary Clinton listens to her introduction before she speaks, Wednesday, April 6, 2016, at the Pennsylvania AFL-CIO Convention in Philadelphia. (AP Photo/Matt Rourke)
Democratic presidential candidate Hillary Clinton listens to her introduction before she speaks, Wednesday, April 6, 2016, at the Pennsylvania AFL-CIO Convention in Philadelphia. (AP Photo/Matt Rourke) Matt Rourke AP
Democratic presidential candidate Hillary Clinton listens to her introduction before she speaks, Wednesday, April 6, 2016, at the Pennsylvania AFL-CIO Convention in Philadelphia. (AP Photo/Matt Rourke) Matt Rourke AP