A group representing several major airlines alongside travel companies and airports is opposing a Senate bill that would require the Transportation Security Administration (TSA) to generally use manual ID verification at security checkpoints instead of facial recognition.

The bill, introduced by Sen. Jeff Merkley (D-Ore.), would broadly restrict TSA’s ability to use biometrics and facial recognition, carving out a few exemptions for the agency’s PreCheck and other Trusted Traveler programs. Passengers may still opt in to the use of facial recognition at the checkpoint.

In a letter Monday to Sens. Ted Cruz (R-Texas) and Maria Cantwell (D-Wash.), the air industry groups said the law was a “step backward” and that facial recognition technology made security screenings far more efficient.