The chief of U.S. Border Patrol during Barack Obama's presidency said Monday that President Trump is right in his view that border walls are effective.

Mark Morgan said on "Tucker Carlson Tonight" that walls "absolutely work" and that there is no real argument against building and implementing one.

He added that although he was removed from his position by President Trump's administration, Trump's stance on border security makes sense.

"The president is right. ... That's based on historical data and facts that can be proven," Morgan said.

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He said that opponents of a border wall are looking to make a political point.

"I cannot think of a legitimate argument why anyone would not support the wall as part of a multi-layered border security issue," noting his experience with the FBI in Texas.

People are too concerned about the president's style and the delivery of his case for a border wall as opposed to the substantive issues at hand, Morgan said.

He added that Trump is correct in calling the issues at the border a national security problem, and that border security professionals think the same.

"Why aren't we listening to the experts and the people who do it every day? I don't understand that."

Watch the discussion with Tucker Carlson above.

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