With his poll numbers rising, Herman Cain come under fire from fellow Republicans at the GOP debate last night.
GOP rivals relentlessly attacked his so-called "9-9-9" tax reform plan, which calls for a 9-percent flat tax on income, a 9-percent corporate tax, and a 9-percent national sales tax. They called the plan inadequate and politically unrealistic.
But Cain fired back – particularly at Mitt Romney, criticizing the former Massachusetts Governor's 59-point plan as simple and nontransparent.
Christine Romans talks with CNN contributors Hilary Rosen, John Avlon and Will Cain on their take on Herman Cain's moment in the spotlight.