Edward J. Black: “I firmly believe that the United States must continue its full-throated support of freedom of expression worldwide.”

You are talking about a surveillance, monitoring capability which can be very detailed, very intrusive.

The fact is, modern digital technology has great benefits, but it does open up the potential for great access into people's private affairs.

If we go to the concept that the data used by technology companies to perform their functions are just business records, then a massive amount of information about everyone becomes available under a lower standard.

The amount--what you learn by being able to monitor precisely someone's location over a period of time can reveal all kinds of sensitive things.