ISIS has a strong mystique, strong enough to get young people from Europe and even America to travel to Syria and take up arms with them. Strong enough to get a couple of fanatics in San Bernardino to shoot down 14 of their co workers in cold blood and then die in a gun battle with police.
Well, America has a strong mystique too. America where the streets are paved with gold. America from where hot pop music comes from. America land of the Hollywood movie and the Wild West. America the land of fine big powerful cars and flawless thruways. America where obstacles are over come with miraculous new technology. America that flies to the Moon. America where all men are created equal. America where any man can become rich. America which has millions of people yearning to get in. America which has taken in millions of immigrants over the last century and turned them into hardworking loyal citizens.
I'll bet that we can take in 10,000 or even more Syrian refugees, settle them, employ them, and turn them into hardworking loyal citizens just like we have done with millions of immigrants in the past. Even if a few ISIS crazies slip in with them, the bulk of them will buy into America, and tip the cops off to any terrorists hiding in their midst.
It's worked before, and I bet it will work again.