have come home, come back to western countries. >> the average -- >> to do what? plan paris attacks? >> we don't know and this is what's scary. we looked at all the numbers of people that came back from western europe and the united states, from the west in general and the average goes between 20 to 30%. the average of people from the au for example who have returned is about 26.8% in the united states, we have about 40 who returned, a little less than the 26.8% and we need to know, we need to establish a threat matrix for each and every one of these people. we need to know, did they come back because they went there and said well, this is not my cup of cake or not impressed by the islamic caliphate or come to kill people like in paris? >> let's talk about 40 people in the united states that have been allowed to come in. some might say what donald trump said today is way over the line but what? there is 40 possible isis