Marco Rubio responds to criticism over debate performance
Republican presidential candidate Marco Rubio is getting rough reviews after Saturday night's heated GOP debate. He kept repeating versions of: “Let’s dispel with this fiction that Barack Obama doesn’t know what he’s doing. He knows exactly what he’s doing.” Rubio, who is hoping to move up from his third place finish in Iowa when New Hampshire votes Tuesday, joins “CBS This Morning” from Nashua, New Hampshire, in an interview you'll see only on “CBS This Morning.”