The Transportation Security Administration (TSA) needs to address the vulnerability of airport security and potential risks of insider threats according to a new Government Accountability Office (GAO) report.

The report recommends that TSA update its operational assessment “to reflect changes in the airport security risk environment, such as TSA’s subsequent determination of risk from the insider threat—the potential of rogue aviation workers exploiting their credentials, access, and knowledge of security procedures throughout the airport for personal gain or to inflict damage.”

As The Hill reports, insider threats are to blame for breaches at airports around the world.

In April, I joined my colleagues in the Senate to improve airport security by passing a comprehensive Federal Aviation Administration (FAA) reauthorization bill that strengthens air traveler security.

The bill enhances requirements and vetting for airport employees with access to secure areas, reduces crowds at security checkpoints by screening passengers in advance and providing unneeded TSA security equipment to international airports with direct flights to the United States to improve inspection of passengers and their luggage.

These safety reforms are important to preventing terror attacks at our airports. The recent attack on the Belgium airport serves as a reminder that terrorists remain committed to attacking our airlines and infrastructure. I’m committed to taking the necessary action to protect air travelers. I urge my colleagues in the House to pass this legislation to improve safety at our airports.