(CNN) Ted Cruz moved to a more aggressive deportation policy in an interview on Monday night, saying he would look for and deport undocumentedl immigrants using Immigration and Customs Enforcement (ICE) agents, marking a change from a January interview with CNN.

Appearing on "The O'Reilly Factor" on Fox News , Cruz was repeatedly pressed on the specifics of his deportation plans by host Bill O'Reilly, who asked Cruz, "Would you go look for them, though? As (Donald) Trump would look for them to get them out, would you do that if you were president?"

"Bill, of course you would, that's what ICE exists for," Cruz said. "We have law enforcement that looks for people who are violating the laws, that apprehends them and deports them."

O'Reilly offered a hypothetical example of an immigrant from Ireland with "a couple of kids and he's settled into Long Island."

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