If the NSA monitor online fora, this is a great way to get those magic five words: "randomly selected for additional screening"

Out of the last half dozen times, I've had problems with US flight BPs every time. Once for additional screening, once because LG managed to screw up and somehow delete all my API, so my connecting boarding pass failed conformance, and the other four times just a simple technical glitch.

Don't worry, there's not going to be any black helicopters waiting for you, no gloved fingers going anywhere, just a customary *random* check. Grin and bear it. The options they will offer you are realistically very simple, comply, or don't visit the USA.