Vaccine passports are being considered in the U.S., but the idea is raising debate, The New York Times reports. While the World Health Organization does not support mandatory proof of vaccination for international travel and the Biden administration is not supporting a credential system, some universities will require proof of vaccination this fall, companies and nonprofits are developing websites and applications, and airlines are testing the “CommonPass” app. Former Rep. Justin Amash, R-Mich., called vaccine passports “a nightmare for civil liberties and privacy.” Editor's note: IAPP Staff Writer Jennifer Bryant reported for The Privacy Advisor on the privacy considerations surrounding vaccine passports.