in a car accident in the 1970s. sadly, he has been through this tragedy of losing a child before. president obama says he is grieving along with the biden family saying vice president, joe is one of the strongest men we ever know. he is as strong as they come. it is one of the things we love about him. it is a testament to joe and jill who they are that beau lived a life he did. president obama and the first lady spent time with the biden family on sunday. he spent 30 minutes at their home in washington, d.c. john and christine. >> sunlen serfaty, thanks for that. >> what is sad, joe biden had to deal with sadness in his life. one of the things he tells parents who lose children he says there will come a time when your memory of your child will put a smile on your face before it brings a tear to your eye.