Keep in mind that we could reduce the likelihood of terrorism to close to zero if we were to simply suspend the Constitution altogether and allow the government to spy on everything we do, stop us for random searches at any time, invade our homes and IT resources (particularly WRT content at Layer-7) without a warrant, and otherwise reduce freedom to zero. Freedom really seems to be the problem here, then, doesn't it? And yet, without that, there really wouldn't be much of a nation worth saving. Totalitarian states like North Korea, where terrorism is likely not a concern at all, don't seem to have much of a tourism industry. Therein lies the challenge - no one wants to kill the country in order to save it. It's just a matter of finding a balance that works, and I think we can do that.
In the meantime, the more paranoid out there can find very effective Layer-7 encryption for all forms of traffic at popular prices.
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