Yes. Certainly I mentioned Afghanistan and Pakistan, but there are others where there are significant security problems or potential terrorist problems. That doesn't mean those are the only ones. You might get a terrorist supporter coming in through a completely different route.
I think there are countries we have to give particular attention to. As Jack Hooper reported, they were only able to screen 10% of those coming from Afghanistan and Pakistan.
I think you can probably list priority countries in terms of security screening, which the Americans have done. They've said we've got to be particularly careful about people coming from X, Y, and Z countries.