On “The O’Reilly Factor” Wednesday evening, host Bill O’Reilly lit into GOP presidential hopeful Donald Trump, insisting that it is possible to vet refugees and that insulting an entire religion is “hurting the USA’s position against ISIS.”

“If you are elected president, what will you do regarding Muslims who are not Americans traveling to the USA?” O’Reilly began by asking.

“I would try to find out what is going,” Trump answered. “Why the hatred, why are people willing to fly planes into the World Trade Center? Why did those two people last week go into a room and start shooting people? It’s a very serious problem and somebody had to bring it up.”

Of course Trump answered with a non-answer, so O’Reilly had no choice but to upbraid him. “You didn’t answer my question,” he said. “What would you do to Muslims coming from overseas?”

Trump insisted that the ban on a single religion “isn’t about religion – this is about security”