Just out of interest, what happens to the fingerprints taken when you enter the USA are they kept forever on some massive database, or destroyed after a set time?
Because it begs another question the 'police state' that's our own HMG who likes to keep tabs on every citizen, could quite easily ask for the details and fingerprints of every UK citizen who enters the states, so that they can be stored for future use, and that's without the outcry that would ensue if they went public!
Personally it didn't bother me as I'm careful to use gloves for all the robberies