Christians are not sending their kids out to explode in mass murder attacks
Trump's refugee policy raises a question: How do you tell a Christian from a Muslim?You can do it the same way that Islamic terrorist spot the Christians by asking them questions that test their knowledge of Islam. Do the reverse to find out whether those seeking to get a preference for entry into the US are Christians.
All the countries falling under Trump’s ban have Christian minorities, often integrated within larger urban centers. And often they are physically indistinguishable from their non-Christian compatriots.