>>>In the wildest hypothetical situation, if a psychic were able to concentrate on a crime and determine who the perp was, would you feel him doing so would be unconstitutional. (the exercise of his own talents). Is the same true if they could block terrorist activities that way? Depends on whether the psychic had probable cause and wasn't Ms. Cleo.
Of course, what we are arguing is whether the government, represented by police, is able to search your "effects" without justifiable cause. It wouldn't matter what a psychic saw, unless he was someway connected to the law, and even DNA sometimes is not admissible.