Defense Secretary James Mattis fired back Wednesday at criticisms of the Trump administration’s move to send troops to the Mexican border, as the migrant caravan moves north.

Fox News' Lucas Tomlinson said on Outnumbered Overtime that according to Gen. Terrence J. O'Shaughnessy, more troops will be deployed to the border in addition to the more than 5,000 already expected to arrive soon.

"The support that we provide to the secretary for homeland security is practical support based on the request from the commissioner of customs and border police, so we don't do stunts in this department,” Mattis told a reporter who asked if the Pentagon’s move was a political stunt.

O'Shaughnessy also said that there are currently 1,800 troops active-duty troops are in Texas, with most of them at Lackland Air Force Base.

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The armed troops will be sent to the border to perform logistical and support functions.

Tomlinson added that according to officials, the caravan is roughly 900 miles away from the border but is more organized than previous groups.

President Trump has repeatedly called for the caravan to retreat, tweeting on Wednesday that there are "many more troops coming."

O'Shaughnessy has also said that miles of barbed wire were sent to the border, and more Border Patrol personnel would also be delivered.

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