Alphabet Inc. is pushing efforts to roll back the most comprehensive biometric privacy law in the U.S., even as the company and its peers face heightened scrutiny after the unauthorized sharing of data at Facebook Inc.

While Mark Zuckerberg and Sheryl Sandberg were publicly apologizing this month for failing to protect users' information, Google's lobbyists were drafting measures to de-fang an Illinois law recognized as the most rigorous consumer privacy statute in the country. Their ambition: to strip language from a decade-old policy that regulates the use of fingerprints, iris scans and facial recognition technology, and insert a loophole for companies embracing the use of biometrics.

Google is trying to exempt photos from the Illinois law at a time when it's fighting a lawsuit in the state that threatens billions of dollars in potential damages. The world's largest search engine is facing claims that it violated the privacy of millions of users by gathering and storing biometric data without their consent.