We know they're watching. That much is not in question. The only real debate that could possibly have enough substance to sway the American government is whether or not the data being collected is actually effective at identifying terrorists.
In the infographic, you'll see that, at least according to these formulas and calculations, the chances of finding terrorists using the NSA's methods are very slim, especially when considering the rights of innocent citizens that must be trampled upon in order to find them.
Infographic by TopComputerScienceDegrees.com
