chain migration thing, the visa lottery program that the assailant in new york was a direct beneficiary of. national security experts here with us. what do you this? >> anything having to do with migration, immigration, all of these systems, these are subject for discussion and public opinion is changing. public opinion better better control. the issue is jihadists to penetrate these systems and if we have other systems for radicals to get in the united states anyway. first, we need to focus on the vetting system. once we have a vetting system, then we can see if it will be to our advantage or not. >> walid, would any of the measures the president wants to implement would have stopped