I am not trying to instigate anything here when I say there may come a time in this nation, before this mess is over, that we may have to shoot these people in self-defense. I think the notion of a fifth column here is very appropo.
And on a strictly secular basis, I think that the people who are buying arms and ammo may have the right idea.
The enemy is in this country right now. And any terrorists who are not already here are free to immigrate. The government has been doing an excellent job rounding up suspects from the last two attacks. But what about the next attack? We thought there was only one murderous Islamic cell in America the last time, too. Congress has authority to pass a law tomorrow requiring aliens from suspect countries to leave. As far as the Constitution is concerned, aliens, which is to say non-citizens, are here at this country's pleasure. They have no constitutional right to be here.