VP Biden speaks at Penn commencement

Vice President Joe Biden speaks at the University of Pennsylvania's School of Social Policy and Practice commencement ceremony Monday, May 17, 2010, in Philadelphia. Biden's daughter, Ashley Biden, graduated with a Master of Social Work. (AP Photo/Charles Fox, Pool)

May 18, 2010 4:12:18 AM PDT
Vice President Joe Biden is urging graduating University of Pennsylvania students to remain optimistic in the face of two wars, high unemployment and budget cuts.