Story highlights The pair had a fiery exchange during CNN's "State Of The Union"

Ex-Maryland Gov. O'Malley said immigrants don't come to the US "because we're a nativist white America"

(CNN) Former Democratic presidential candidate Martin O'Malley on Sunday chided ex-Donald Trump campaign manager Corey Lewandowski over the GOP nominee's immigration policies, saying the US isn't an "only-for-white Americans sort of country."

O'Malley, a former Maryland governor, appeared on CNN's "State of the Union" Sunday with Lewandowski, Trump's campaign manager until he was fired in June.

Lewandowski, a CNN contributor, called his former boss "a raw talent."

That prompted O'Malley to criticize Trump over his proposal to block Syrian refugees from entering the US, retorting "he's raw, but it's not talent." O'Malley added, "It's the rawness of scapegoating others. The man finally comes out with his first political campaign of the season, and it's attacking Syrian refugees."

O'Malley then made his point on a more personal basis, citing a now-viral photo of five-year-old Syrian Omran Daqneesh.

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