House Foreign Affairs Committee Chairman Michael McCaul (R-TX) said on Sunday that one of the biggest threats to U.S. national security stems from President Joe Biden’s disastrous withdrawal from Afghanistan in 2021.

McCaul made the remarks during an interview on CBS News’s “Face The Nation” after he was asked for his assessment on “where things stand with U.S. border policy and the national security threats there, especially with this mounting number of arrests at the border in recent weeks.”

“In addition to the aggravated felons and the fentanyl — and I can go on and on about that — what I worry most about is, look, you had the fall of Afghanistan. Thousands of ISIS-K came out of those prisons at Bagram, end up in a region called the Khorasan region, which is Pakistan, Afghanistan, Tajikistan.”

“They make their way over. They come through Mexico. And they enter into the United States. ISIS,” he said. “When I chaired Homeland, we worried about this, but never actually saw it. Now we have ISIS in the homeland. Fortunately, the FBI has detained the eight individuals. But the question is, how many more are here.”

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