Rubio challenges Cruz on immigration, says he doesn't speak Spanish

Marco Rubio and Ted Cruz have battled it out on a debate stage before over illegal immigration, but it got uniquely testy Saturday night at the Greenville, S.C., debate.

After exchanging barbs over legislation, Cruz at one point alluded to a Univision interview Rubio had given where he discussed immigration in Spanish.

“I don’t know how he knows what I said on Univision, since he doesn’t speak Spanish," Rubio countered.

Cruz seemed surprised by the shot and immediately responded by speaking in Spanish.

Cruz and Rubio are both of Cuban heritage — the Texas senator's father fled Cuba during the 1950s, as did Rubio's parents.

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