Vice President Joe Biden, left, walks hand in hand with his daughter along the rim of the Grand Canyon Tuesday, July 27, 2010. At their right is Jon Jarvis, director of the National Park Service, and Steve Martin, far right, Grand Canyon superintendent. ((AP Photo/Felicia Fonseca))
October 31, 2011 12:15:16 PM PDT
WASHINGTON - October 31, 2011 --
Ashley Biden, the only daughter of Vice President Joe Biden, is engaged to be married.