Two years ago, everyone who needed a visa was already being fingerprinted and mug-shot. I presume by now everyone, even the ones on the Visa Waiver Program, are having to go through that. And the US keeps increasing its demands in order to preserve the waiver (like having the airlines violate the EU's privacy protection laws, and changing the format of our passports).

Those whom the Gods wish to destroy They first make mad. -- Euripides