We’re so infiltrated and compromised here, that when the hundreds of well-prepared terrorist cells get their “go orders”, it will be mass chaos and THSTF.
A big problem here is that many “peaceful” Muslim immigrants can spontaneously become terrorists. They don’t have to belong to some sort of organized cell.
It’s not like it was in WW II. Back then, the Nazis landed saboteurs by submarine. But there was very little chance that some German-American would just decide to go blow up a bridge.
The German-Americans fully assimilated.
The Muslim-Americans, well, not so much.