In the wake of the recent horrific shooting at Marjory Stoneman Douglas High School in Parkland, Florida, a number of proposals involving federal grant programs have been offered in Congress to try to address the critical issue of school safety. Empowering states and localities to implement evidence-based programs that meet their needs represents a sensible approach. Among the proposals under consideration is the Students, Teachers, and Officers Preventing (STOP) School Violence Act of 2018, which has been introduced in the House by Rep. John Rutherford, R-Fla., a former sheriff, and in the Senate by Sen. Orrin Hatch, R-Utah. Both House...