CNN's Gabriella Schwarz, Jessica Yellin, Jim Acosta and Ashley Killough contributed to this report.

CNN: STORY HIGHLIGHTS

CNN's Paul Steinhauser, Jessica Yellin, Rachel Streitfeld, Gabriella Schwarz and Martina Stewart contributed to this report.

CNN: Romney backs extending lowered student loan rates

CNN's Jim Acosta, Jessica Yellin, Dana Bash, Deidre Walsh, Ted Barrett, Paul Steinhauser, Gabriella Schwarz, Halimah Abdullah, Ben Brumfield, Steve Almasy and CNNMoney's Rich Barbieri contributed to this report.

CNN: STORY HIGHLIGHTS