Michelle Obama noted that her husband's mom was an 18-year white woman when Barack Obama was born.
"Now you know she was a dreamer," she said.
She noted that her husband's family history, including his Kansan grandparents and the other side of his family, who are from Kenya.
"He's got a grandmother living in a small mud hut," she said. "Imagine a president of the United States who brings that kind of sensativity to the office."