What the TSA could teach Congress about gun control

With the country continually in mourning over gun violence — we keep seeing mass shooting after mass shooting after mass shooting — it’s time to find ways to prevent it, lest we remain the “only nation where this regularly happens.” Those solutions needn’t be new, and could perhaps be kind of banal, like the risk-based decision-making behind TSA PreCheck screenings.

The Transportation Security Administration introduced TSA PreCheck in response to September 11 to prevent future terror attacks on airplanes. The system has a dual mission: expediting travel for people who submit to enhanced background checks and...