So, you are saying that known suspected terrorist numbers dialed from the US aren't checked, only American numbers dialed from known suspected terrorists numbers?
How odd.
"So, you are saying that known suspected terrorist numbers dialed from the US aren't checked..."
No, I am saying the warrantless NSA tappings are being done by incoming calls from other countries.
They are obtaining warrants from the judicial branch to conduct what I've quoted from you above.