Yellen says interest rates may have to rise 'somewhat' to keep economy from overheating

Treasury Secretary Janet Yellen said interest rates may have to increase somewhat in order to keep the U.S. economy from overheating. In an interview with the Atlantic that was recorded Monday and aired Tuesday, the Treasury chief said, "It may be that interest rates will have to rise somewhat to make sure that our economy doesn't overheat, even though the additional spending is relatively small relative to the size of the economy."