What becomes worrisome is, if domestic ISIS members start to kidnap and decapitate innocents right here in the US.
After all, we know that there are about 100 Americans who have joined ISIS in Syria.
Sooner or later they will be sent back home to create havoc here. With our wide open borders they will have no difficulty sneaking in, undetected.
Now you understand why Americans have been arming themselves to the teeth.