they should not be allowed unless they can be 100% vetted and since we have no wqay to do that, and we where warned by isis that they would use them to infiltrate our country to let them in would be begging for attacks like france just had. i would say that the barbarions are at the gates but you betrayed us and never built the gate. no dont let them in, and secure the border we have waited long enough, do we really have to wait till an american city is destroyed before we do the simplest thing to protect our citizens. if we where attacked by a terrorist who came across our open border those who had the responsablity to protect us should be hung for being a traitor. build the wall. and put the military and guard on it for there training, they have to train somewhere why not on the border.