[paul51]

You said this concerns you. It would concern me to. I'm asking if there are any safeguards against abuse.

How do we know when the war is over? When terrorist stop exploding on a regular basis

I'm out.

[JeffAtlanta]

'm asking if there are any safeguards against abuse.

From my initial research, there are no safeguards - agents are on the honor system. A person won't ever know if they've had their records subpoenaed so they won't even be able to challenge it.