One of the main rejoinders to my stance on FISA, which is that the government should get warrants whenever US territory is involved, is to say "What's the harm? How could the government use this to spy on innocent Americans?" Just off the top of my head, it seems tailor-made for spying on Arab Americans who organize peacefully to lobby against America's Israel policy. Whatever your position on that policy, this should give you pause . . . since it would make it equally easy to spy on AIPAC tomorrow.
But the real answer is, "What's the harm in getting a warrant from a FISA court?" If the government isn't going to spy on millions of innocent Americans, it really shouldn't be that onerous to pre-clear it with the court.
I don't blog a lot about national security because it just isn't my area of expertise. But my general position is that the government should have as little freedom as possible to do anything, particularly spying on people on American soil. Speaking as someone who lost more friends and acquaintances in the World Trade Center than almost any of my readers, I think there are worse things than terrorism. But it's also not really clear to me how much this helps us fight terrorism. As far as I can tell, the FISA courts are extraordinarily willing to grant the government what it asks for.


Previously, government wiretapping has been treated considerably differently when there has been an actual wire involved. For things that travel through the air, it's absolutely impossible for intelligence agencies to avoid intercepting all signals, and then filtering through it for what they want and discarding the ones for which they don't have warrants. The government has always (including right after the Church reforms) been allowed to intercept lots of wireless signals traveling outside the US and then discard the ones (within 48 hours) belonging to US persons without outstanding warrants or which happened to be US in origin. The latter is governed by executive orders.
By contrast, signals sent over wires have been different. With old-style phone circuit connections, it was pretty easy for the government to figure out who was calling whom, and to only intercept the signals of particular people. It was also easy to tell if a signal involved a US party on either end. They could tap only the signals of interest, and not touch the others. Hence this has always required warrants in a way that wireless intercepts has not.
What the government has been arguing for a while is that signals sent over packet-switched networks are very different, especially when encryption is involved. The intelligence agencies argue that they cannot intercept such signals without behaving as in the wireless case, by intercepting everything and then throwing away whatever is US person without a warrant. (So, to put it another way, the intelligence agencies have responded to the inherent improvements in privacy that, say, VoIP offers by demanding additional tools that would reduce privacy on net.)
Part of the question is: Does the government need a warrant for only the stuff that it keeps, or would it hypothetically need a warrant for anyone whose data could possibly be intercepted? (The latter could make it technologically impossible to capture particular signals at all, since it would be impossible to tell if a US citizen was one of many people on the same signal until examining it.) If you do allow the government to examine signals enough to figure out who is sending them, and throw away the ones it doesn't have a warrant for, is there a level where the expectation of the percentage of US citizens in the signal being captured is too great to be allowed without a warrant?
The intelligence agencies also wish to make an analogy to customs and border searches; they wish to be able to search signals that leave the country at the border but on US soil.
Posted by John Thacker | March 17, 2008 1:24 PM