[what's up]

Listen to activity where one party to the discussion is reasonably suspected of terrorist activity.

And then collect all data related to that party...all calls made within the last two years, etc. in order to catch not only the one party but the whole network. You can't do this if surveillance is curtailed.

Knowing the US can do this is keeping the terrorists at bay.

[DuncanWaring]

So if someone from Afghanistan or Chechnya calls Suspicious Person A in the US, and Suspicious Person A then misdials a phone number and gets me, the Feds should be allowed to monitor me “just in case”?

I don’t think so.