Paul Ryan: GOP nominee must reject bigotry

As voters head to the polls on Super Tuesday, House Speaker Paul Ryan said that the Republican nominee for president must reject any racist group or individual. Ryan's comments come after Republican front-runner Donald Trump wavered on disavowing white supremacist David Duke. With more on Super Tuesday's impact on the race to the White House, CBS News' Steve Chaggaris and The Daily Beast's Patricia Murphy join CBSN.