01/26/2012 09:13 pm ET Updated Jan 26, 2012

Mitt Romney: I Don't Know If My Own Ad Is True Or Not (VIDEO)

Mitt Romney told CNN's Wolf Blitzer he had not seen an ad -- it is a radio ad -- charging that Newt Gingrich called Spanish "the language of ghetto" during a heated exchange in the Republican debate in Florida Thursday night.

So Blitzer's staff at CNN went and checked to make sure, and pointed out that Romney's campaign paid for the ad, and also that Romney says at the end of the ad that he approves the message.

Romney then turned to Gingrich and admitted that the ad that went out in his name, with his endorsement, made a charge against Gingrich that he didn't know was true or not.

"Let me ask the Speaker a question. Did you say what the ad says or not? I don't know," Romney said.

Former House Speaker Gingrich said: "It's taken totally out of context."

"Oh, OK, you said it," Romney responded.

"No," Gingrich said. "I said in general, about all languages, it was better for children to learn English, in general, period."

Former Massachusetts Gov. Romney finished the exchange: "Let's take a look at what he said."

What Gingrich said was this:

“The American people believe English should be the official language of the government. … We should replace bilingual education with immersion in English so people learn the common language of the country and they learn the language of prosperity, not the language of living in a ghetto."

Afterward, the Romney campaign sent out a Politifact article that rated the Romney ad "mostly true."