prescreening program for people who want visas to come from those countries, including having them beor couple of times before they get the visa. is no question there are measured responses you could take in addition to what has been done already. people talkear about, for example, one of these through belgium, maybe we should stop traveling through belgium, that strikes me is way too far. steps, butdditional you want to balance the fear factor against the damage to our economy and trade. >> we could take those steps. should we? steps, but you want to balance the fear factor against>> i think i woule what the current regime is turning up. it looks like we're seeing other people coming from the area who have potential risk, then i think i might take a serious look at whether i want to suspend residents of those countries from coming to the u.s. for a time. i want to be careful to say we should not interfere with the ability to train medical going to the area to help out. at the end, as tom said yesterday, the only way you will is stop it at the source. if you do not do with the problems