In an interview today with a local ABC affiliate in Columbus, Ohio, Donald Trump suggested that what angered critic Khizr Khan was Trump’s aggressive efforts to prevent terrorists from entering the country.

“It’s a very big subject for me, border security is very big. When you have radical Islamic terrorists probably all over the place, we’re allowing them to come in by the thousands and thousands. And I think that’s what bothered Mr. Khan more than anything else. And, you know, I’m not going to change my views on that. We have radical Islamic terrorists coming in that have to be stopped. We’re taking them in by the thousands.”