What happens to the thousands of foreign nationals who come here on student visas and then disappear?

Shannon Bream tonight reported that the administration admits that 60,000 people may have overstayed their student visas in the past year, and that 6,000 have been referred to Homeland Security for further investigation.

A top recommendation by the 9/11 commission was to clean up the student visa system, since many of the 9/11 attackers got in legally that way. ICE says it has made many improvements to visa security since the 9/11 terror attacks.

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In the last decade, student visas have more than doubled. The 9,000 schools in the visa program range from Harvard University to schools that teach horseshoeing, and they are responsible for alerting the federal government if students don’t show up to class.

Rep. Peter King was on “The Kelly File” to discuss the student visa program, which he said has been “a serious issue” for many years. He said that universities are at fault because they often look the other way, since many international students pay top dollar to U.S. schools.

Of the threat of ISIS to the U.S., King said, “I’m worried whether it’s 9/11 or not, I’m very concerned.”

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King also blasted President Barack Obama’s response to ISIS, saying that the threat has been known in the intelligence community, and it’s nothing new.

“Now he’s somehow playing catch up […] he had 12 months to do this, and he has failed. This is a terrible failure of leadership by the president,” he said.

Watch more above.