Former Trump campaign manager Corey Lewandowski taunts commentator who referenced a 10-year-old girl with Down Syndrome separated from her mother at the US-Mexico border

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Corey Lewandowski, President Donald Trump's former campaign manager, appeared to mock an anecdote about a migrant 10-year-old girl with Down Syndrome who was reportedly separated from her family at the US-Mexico border.

The exchange happened during a discussion on Fox News about the Trump administration's "zero-tolerance" border policy.

In recent days, the administration has faced growing bipartisan criticism over the policy, in which migrants are being referred for criminal prosecution when they cross the US border illegally, which leads to children being separated from the adults they're traveling with.

The ensuing controversy surrounding the Trump administration's enforcement of its "zero-tolerance" policy devolved into a shouting match during a Fox News segment on Tuesday.

"Look, I read today about a 10-year-old girl with Down Syndrome who was taken from her mother and put in a cage," Zac Petkanas, a former Hillary Clinton campaign aide, said.See the rest of the story at Business InsiderNOW WATCH: Why the North Korea summit mattered even if it was 'mostly a photo op'See Also:Michael Avenatti is now trying to take on Trump on his family-separation policy as outrage reaches a fever pitchChief border patrol agent says many migrant children are 'hardened adults' who 'have been working for years'Tucker Carlson tells Fox viewers that the 'ruling class' cares 'far more about foreigners' than 'their own people' in monologue on immigrationSEE ALSO: Sobering photos show a Texas detention center where hundreds of immigrant children wait to be reunited with their families

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