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Attack that occurred yesterday in new york? >> well, uzbekistan wasn't on the travel ban list, so that's a very relevant point here. but most counterterrorism professionals believe the system that was in place before was e extremely rigorous, with extremely rigorous vetting of all sorts of people coming into the united states, and these additional measures haven't made much difference. they may have made a political difference but not a security difference. there is concern that they could make a negative security difference because the united states is going to be perceived as being hostile t...

Everyone in the government goes through the same process. so the answer is, those same -- that same process worked for general flynn as it did for me or anyone else who works here. there's no difference of a security difference once issued. >> there is no difference of a security clearance once issued. let's bring in kristen welker. sean spicer largely sticking to what a senior official told nbc news on background a little earlier today, that they believe that president obama, if he was so concerned, should have revoked his security clearance. >> reporter: that's right. and the reality is, it'...