This bill directs the Nuclear Regulatory Commission (NRC) to implement specific actions to strengthen security measures for radioactive materials, addressing risks identified in a Government Accountability Office (GAO) report. The legislation mandates that the NRC incorporate socioeconomic consequences into its decision-making for setting security measures. Furthermore, it requires immediate action for Category 3 licenses and sources , including adding all Category 3 licenses to the Web-based Licensing System and tracking all Category 3 sources in the National Source Tracking System. Vendors must also verify the legitimacy of purchasers' Category 3 licenses with the appropriate regulator. The NRC is directed to revise all applicable guidelines, policies, and regulations within one year of enactment to carry out these new requirements.