Mitt Romney brushed off Rick Santorum's criticism of his ability to oppose President Barack Obama's health care law, saying he doesn't listen to Rick Santorum much anymore.
"I'm not going to worry too much about what Rick is saying these days," Romney said on CNN's The Situation Room, telling Wolf Blitzer that Santorum is getting more outspoken on the campaign trail as he falls behind.
"When you fall further and further behind, you get a little more animated," he added.