Both Democrats and Republicans on the House Committee on Oversight and Reform grilled leaders of the FBI and Transportation Security Administration on Tuesday about how their use of facial recognition software conflicts with transparency and privacy laws.

“This technology is evolving extremely rapidly without any real guard rails,” Oversight Chairman Elijah Cummings warned in his opening statement at Tuesday’s hearing, the panel’s second in less than a month on facial recognition. “Whether we are talking about commercial use or government use, there are real concerns about the risks that this technology poses to our civil rights and liberties and our right to privacy.”

Democrats and Republicans on Oversight have not agreed on much so far this Congress, as Cummings has pursued multiple investigations into President Donald Trump’s administration and personal finances.

But members from both parties criticized the FBI and TSA for implementing new facial recognition technology without proper testing, transparent updates and assessments of accuracy and the impact on civil liberties. Lawmakers expressed concerns about law-abiding Americans’ rights to privacy, which include ensuring proper storage of photographs on government databases and preventing improper arrests based on imperfect facial recognition technology.

Kimberly Del Greco, the deputy assistant director of the FBI’s Criminal Justice Information Services section, sought to reassure lawmakers.