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Vice President Joe Biden greets Catholic sisters who were kicking off Network's Nuns on the Bus tour Sept. 17, 2014, in Des Moines, Iowa. Social Service Sr. Simone Campbell, executive director of Network Catholic Social Justice Lobby, is at left behind him. (GSRphoto/Jan Cebula)
Vice President Joe Biden greets Catholic sisters who were kicking off Network's Nuns on the Bus tour Sept. 17, 2014, in Des Moines, Iowa. Social Service Sr. Simone Campbell, executive director of Network Catholic Social Justice Lobby, is at left behind hi