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Vice President Joe Biden and his wife Jill applaud during their son Beau Biden's speech at the Democratic National Convention in Charlotte, N.C., on Thursday, Sept. 6, 2012. (AP Photo/Charlie Neibergall)

Associated Press
Vice President Joe Biden and his wife Jill applaud during their son Beau Biden's speech at the Democratic National Convention in Charlotte, N.C., on Thursday, Sept. 6, 2012. (AP Photo/Charlie Neibergall)
Vice President Joe Biden and his wife Jill applaud during their son Beau Biden's speech at the Democratic National Convention in Charlotte, N.C., on Thursday, Sept. 6, 2012. (AP Photo/Charlie Neibergall)
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