Clear, Global Entry and PreCheck are three distinct trusted traveler programs. Clear is a commercial effort. Global Entry is a government initiative. PreCheck is administered through the airlines.
It’s good to see the air transportation industry and government regulators trying several things at once in the hope that, as one traveler put it, it “makes travelling bearable again.”
Security checks eased for some air travellers in U.S. airports (Calgary Herald)
The pre-screening programs represent an effort to maintain security against terror attacks while limiting headaches for air travelers. The TSA, which faces constant scrutiny for the invasiveness of passenger screenings, can also be criticized for security lapses.
“On one hand, Congress bashes them for making it miserable for people who fly. But no one in Congress wants to be soft on security,” Bender said.
Airport security is anything but a science, experts say.
There’s more on each of the programs at the link.