Former Trump campaign manager Corey LewandowskiCorey R. LewandowskiPence travel questioned after aides test positive Lewandowski: Trump 'wants to see every Republican reelected regardless of ... if they break with the president' Sunday shows - Spotlight shifts to positive tests among Pence aides MORE on Tuesday dismissed a story from a Democratic strategist about a 10-year-old girl with Down syndrome being separated from her family while illegally entering the U.S.

“I read today about a 10-year-old girl with Down syndrome who was taken from her mother,” Zac Petkanas, who formerly served as the rapid response director for Hillary ClintonHillary Diane Rodham ClintonHarris lists out 'racist' actions by Trump in '60 minutes' interview: 'It all speaks for itself' Trump has list of top intelligence officials he'll fire if he wins reelection: report Clinton says most Republicans want to see Trump gone but can't say it publicly: report MORE's campaign, said during an appearance on Fox News opposite Lewandowski. 

Lewandowski interrupted, mockingly interjecting, “womp womp.” 

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“Did you say 'womp womp' to a 10-year-old with Down syndrome?” Petkanas asked Lewandowski. 

"How dare you!" Petkanas said repeatedly as the pair continued to talk over each other.

The heated exchange follows a report published by the The Wall Street Journal hours earlier in which Mexico’s Foreign Minister Luis Videgaray claimed a 10-year-old girl with Down syndrome was was taken from her mother and brother while the family illegally entered the U.S.

The incident was one of many being highlighted by members of both parties who have vocally criticized the Trump administration's "zero tolerance" immigration policy that has led to at least 2,000 children being separated from their families over six weeks.

The Department of Justice moved earlier this year to prosecute illegal border crossers to the fullest extent of the law, resulting in children being separated from their families and detained as the adults are prosecuted.