And here is where I have a major disconnect with you. A terrorists, by very definition, is someone who incites terror. There have been people labeled as terrorists in the US. It is a label. Government agencies have already turned their ears and eyes inward with regards to communications, what makes you think that this behavior will always be applied to only international terrorists? Think of the idiotic children from the US and Britain that have run off deluded by ISIS slick marketing to join the new caliphate. Should they be tortured if they know something? Obama and Holder have already decided that US Citizenship mean nothing when they ordered a drone strike to kill a US citizen upon nothing more than CIA intelligence. Due process, as we have come to expect in the courts, was tossed right out the window. So now there is precedence that if someone is suspected of being a terrorist, albeit on foreign soil, their rights are no longer inviolate.
Giving up the expectation of due process and in the case of torture, basic human decency, out of a sense of fear is a great way nudge a nation state over into the dystopian police/dictatorship that many already believe the US has become.
Remember, as many on the right are oft repeating, governments never willingly give power back to the people. What is a terrorist to the current regime is nothing more than a label reapplication tomorrow, often depending upon the ideology of those in power.
Links:
http://www.cbsnews.com/news/who-were-the-4-us-citizens-killed-in-drone-strikes/