Apologists keep telling us a high percentage of terrorists are citizens... and therefore there is nothing we can do about it.
Normal people recognize that their citizenship is a fraud, perpetrated not only by the immigrant but by the immigration bureaucracy and the politicians at the top of the food chain.
Part of the issue is that you can’t legally distinguish between ‘real’ and ‘fake’ citizens. Once the barbarian is made a citizen, he is a citizen.
And can you imagine the ways a gub’mint would abuse the power to decide who is a real citizen who is not?
I think the only thing we can do is gut a lot of the loonier civil rights provisions and return to profiling as a law enforcement tool. And you can imagine the screaming that would cause!