Originally Posted by
Critic
I'm somewhat surprised, given DHS/CBP paranoia, that there isn't some kind of integrated fare-gate-type system that prevents a traveler from continuing on into (presumably) the baggage hall without the machine's OK, along the lines of Australia's "SmartGate".
The configuration of the machines requires their users to walk past manned desks, and the CBP officers will not hesitate to yell at people who fail to stop for document verification.