And what about the remaining 7 billion law-abiding souls on the planet? I resonate with the intent of this article but how come protecting only an Americans' privacy be of concern to this voice on NYT? I believe this approach is not only insular (apart from being stupid) but also destined to fail.
If I were to run dragnet, I'd accept protecting the interest and privacy of all Americans back home, but strike a deal with GCHQ or some other Government agency and provide them with all the tools and tech to snoop on my fellow citizens. No legal hassles, no constitutional violation. Cost? Well that could be worked out given the advantage the data gives me to remain in power.