What is the criterion for airport applicant selection?

On October 5, 2018, the President signed the Federal Aviation Administration (FAA) Reauthorization Act of 2018, which directed the TSA administrator to approve SPP applications if the administrator determines that “the approval would not compromise security or detrimentally affect the cost-efficiency or the effectiveness of the screening of passengers or property at the airport”. This modifies existing application processing timelines and provides additional Transportation Security Administration (TSA) requirements related to the 49 CFR §44920 Security Partnership Program (SPP).