"They are not looking at people’s names, and they’re not looking at content. But by sifting through this so-called metadata, they may identify potential leads with respect to folks who might engage in terrorism. If these folks — if the intelligence community then actually wants to listen to a phone call, they’ve got to go back to a federal judge, just like they would in a criminal investigation."

So if you're not collecting names, whose name goes on the warrant once suspicious is aroused?