O'Reilly: [Clinton will] get tougher, at least rhetorically, on terrorism, because she's going to have to. President [Barack] Obama's policy of containment has failed. Everybody in the world knows it's failed.

Trump: I don't see it happening with her, she's not going to get tougher, [ISIS] started under her, it was a little group of people, it could've been wiped out quickly and effectively then, now it's a very large group of people, and it's only getting bigger, and if she gets in, it'll be massive, and we won't even have a country anymore. We're going to be afraid to walk outside.

O'Reilly, getting testy: Alright. We're going to hold Mr. Trump...

Trump: And Bill, remember one other thing: They're letting tens of thousands of people come in from Syria, and nobody knows who these people are...

O'Reilly, exasperated: Alright, well we went through that already.

Trump: And a lot of those people are ISIS.

O'Reilly is all but rolling his eyes now: Ok

Trump: A lot of these people are ISIS.

O'Reilly: I'm not convinced of that, but I think there has to be a slowdown... and a real vetting...