Obama on Lincoln: "Special Gratitude"

At a ceremony in the stately Rotunda of the U.S. Capitol marking the 16th president’s 200th birthday, Obama said he felt “a special gratitude” to the historical giant, who in many ways made his own story possible. On Thursday night, Obama, the nation’s first black president, will deliver the keynote address at the Abraham Lincoln Association’s annual banquet in Springfield, Ill.