The recipients their medals. that is the great doctor maya n angelou receiving her honor. this is one of the events he enjoys because actually we know his background as a community organizer from chicago, living in hawaii. those range of people that he s been exposed to as a young man and now that becomes so valuable when you re embracing the diversity of what people bring to the table. watching warren buffett right now as well. the president remarking about mr. buffett and success and humility as a successful, wealthy american. reporter: exactly. he talked about the fact that warren buffett, yes, known as the oracle of omaha, billionaire investor but also a philanthropist, he came up with the giving pledge to are the richest people give half of their net worth to philanthropy, other causes. we learned a new, fun fact about obama. he said his mother was a big fan