To understand a Bible text it takes an act of the Holy Spirit equal to the act that inspired the text in the first place. A revelation of the Holy Spirit in one glorious flash of inward illumination would teach you more of Jesus than five years in a theological seminary.
Barack knows the American Dream because he's lived it. . . and he wants everyone in this country to have that same opportunity, no matter who we are, or where we're from, or what we look like, or who we love.