Are we so spooked as a nation that we're really considering precognition-style crime fighting? Liberties aside, this really makes me wonder what the atmosphere is like inside the government. With all of this paranoia, only two paths come to mind: 1.) They're aware of a future threat so large that it threatens the stability of the country, or 2.) They're planning something internally to "take over" the country one way…
I think it's just that they place zero or negative value on privacy, so any perceived incremental increase in identifying threats justifies any amount of increased surveillance.