Say what you may about President Obama's politics. One thing that can't be disputed is his reputation as a good dad. His two daughters Malia and Sasha were very little girls when they arrived at the White House, his eldest Malia is going to graduate High School in the Spring. President and Mrs. Obama have raised their children well, with class and dignity.
Recently the President was overheard telling a story about being asked to speak at Malia's high school graduation. He said he couldn't because he would probably be crying. As someone who cries at weddings when the dads give away their daughters I now exactly where the President is coming from. I think he also wouldn't want to take away from her day, by making himself the center of attention.
Read more about it here.