I have just returned from JFK, where I met with a
TSA officer. I'm not in trouble, just approved for TSA's
new "Global Entry" program. It's like a fast lane for
immigration and customs. Instead of waiting in line, you
swipe your passport at the Global Entry kiosk, fill out
the customs declaration on its touch screen, put down a
hand for scanning, and it spits out a card that sweeps you
through immigration and customs. As the TSA officer
told me, "You will never wait in line again." For me, that
was the hook.
Global Entry requires that you apply online at www.globalentry.gov, filling out an electronic form reflecting
  the efficiency of TSA (redundant and irritating). You qualify
to apply if you meet five requirements:
* you are a U.S. citizen, lawful permanent resident, or citizen
  of those countries listed on the site
  * you have never been convicted of a crime anywhere
  * you have never been found violating agricultural, immigration,
  or customs laws
  * you don't lie on the application
  * you are not being investigated by any state, federal, or local
  law enforcement agency
You swap some of your privacy and biometric information
  (all 10 fingerprints and facial recognition) for convenience,
  as well as giving TSA a non-refundable $100 for five
  years of Global Entry. It's not for the paranoid. However,
  Global Entry kiosks are in virtually every U.S. airport with
  international flights (including San Juan), and the TSA agent
  said that they are rolling out an analog for security, as well
  as working with other countries for Global Entry kiosks in
  airports around the world.
- - Mel McCombie