A bunch of muslims chopping each other’s heads off in the desert 7,000 miles away is not a threat to our survival. Letting them into the country can have adverse effect though. Regardless, nuking ISIS is overkill - we have enough technology and conventional weapons to deal with the situation.
Anyhow, in my post:
Once Pres. Cruz or Trump is in charge and a real war is waged I don't think they'll be needed anyhow.