Los Angeles Times: Screening, Travel IDs Sought for Air Safety. The industry also proposed a “trusted traveler” identification card, which would be issued to prescreened passengers willing to undergo extensive personal background checks. These travelers would be sent to airport checkpoints with less intensive screening, allowing them fewer delays.
Ask yourself how quickly the bad guys will create “good” profiles for themselves. It won’t take long.
These quick fixes are uniformly stupid. All they would do is to create a false sense of safety. Don’t ask for common sense, though. That would be too much trouble.
See this analysis from the IEEE Spectrum.