back and look at the civil liberties issued involved, they remain and i think they will continue to be a debate in congress about whether any adjustments need to be made to respond to this. >> teagan, how far will this hearing go and perhaps other hearings in the future, how far will that go to help quiet the critics of the programs. >> depend on how much information we get out of hearings. i think judd is right. in terms of questioning what is happening. if everyone american hypothetically were tagged with a gps device and we tracked their location all times, there is no doubt you could thwart terrorist attempt. other bad activity. that type of thing. the issue here i think is that sure there is this huge collection of phone record, but attached to those phone records is all sort of metadata about locations and where the phone calls were made. that the type of data that most americans don't realize is attached to their phone numbers. attached to their cell phone.