Independent presidential candidate Evan McMullin contradicted Donald Trump’s claims that terrorists may try to embed themselves in the Middle East refugee population as a means of entering the U.S.

“I spent over 10 years in the CIA serving overseas — serving in the Middle East. And let me tell you, if you’re a terrorist and you wanna come in the USA, the worst possible way to try to do it is as a refugee,” McMullin said during an interview on Fox News’ “Special Report” Monday night. “You’ll go through a year and a half to two years of vetting.”