Trump's ban is not a rational policy response to a measured threat; it is a political gambit designed to pander to his political base. It might help to remember that refugees are not some sort of fifth column, or people who identify with any particular agenda; they are people fleeing war, people whose houses have been destroyed, people — women and children —who may have lost family members to industrial scale violence, people who are literally running for their lives. We'll see how you like it when it happens to you.