In a June 29, 2017, photo, passenger Naoki Iseki takes a picture of one of the new face recognition kiosks at gate E7 before he boards a United Airlines flight to Tokyo at Bush Intercontinental Airport in Houston. The Trump administration intends to require that American citizens boarding international flights submit to face scans, something Congress has not explicitly approved and privacy advocates consider an ill-advised step toward a surveillance state. (Michael Wyke/Houston Chronicle via AP)
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