https://www.npr.org/2020/09/01/90859...a-from-immigra
Trump Administration Seeking To Expand Collection Of Biometric Data From Immigrants

U.S. Citizenship and Immigration Services currently requires biometrics, or biological measurements, from anyone over the age of 14 who applies for certain immigration benefits. That information is limited to fingerprints, photographs and signatures, but would be expanded under the proposed policy change to include DNA, eye scans, voice prints and photographs for facial recognition.

According to a draft policy obtained by BuzzFeed News, the government would be allowed to request biometrics from immigrants with green cards or work permits at any point until they become a U.S. citizen, in what amounts to continuous vetting.