The music of the campaigns From Kid Rock to Darth Vader's 'Imperial March,' the GOP candidates are making interesting musical choices.9:45 a.m.
The Invisible Line: Three American families and the secret journey from black to white For much of American history, racial identity has been defined in terms of black and white. But because of their heritage and physical appearance, some families walk the line between cultures. A new book chronicles three mixed-race families whose identities were called into question at various periods in history - with surprising consequences.10:06 a.m.
Daniel Sharfstein: Associate professor of law at Vanderbilt University. "The Invisible Line" is his first book.