Keep this in mind. Whenever the government deploys new methods as a result of more expansive powers granted, like in this case the Patriot Act of 2001, their creativity and rigor in finding other applications in the service of advancing their power and diminishing your privacy and freedoms, will know awfully few boundaries.
Don’t ever give credence to the specific reasons stated at the moment a law is passed. Those are nothing but expedient excuses to help corrupt people push the enactment of exploitative and abusive powers past the finish line. Once this is done it’ll be too late.
Think of the long term opportunities that any new law opens up to people who are behind the trigger of an unbelievably massive force of arms and guns pointing at you, and you will get a much clearer picture of what it going on around you and what will happen in the long run.