I always opt-out, of course. The most recent time, which was years ago now, when I was leaving the country (I'm not a US citizen, and had finished working on a

I always opt-out, of course. The most recent time, which was years ago now, when I was leaving the country (I'm not a US citizen, and had finished working on a H1-B). In the EU, there's delay - they have to get someone, you go to a room, pat-down. Unremarkable. In the US, delay, they get someone - but the "pat-down" was so forceful I had trouble keeping my balance. It seemed to me to be deliberately excessive. Fortunately, I do not live in, and do not need to travel to, the USA.