"U.S. Department of State consular officers and U.S. Customs and Border Protection officers collect biometric information (digital fingerprints and a photograph) from all non-U.S. citizens between the ages of 14 and 79, with some exceptions, when they apply for visas or arrive at major U.S. ports of entry."

https://en.wikipedia.org/wiki/United_States_Visitor_and_Immi...