Transparency in National Security Threats Act

This bill requires the Attorney General and Homeland Security Secretary to submit detailed monthly reports to congressional committees and publish specific data on a public website about individuals encountered by border officials who are listed in the terrorist screening database (called "covered aliens"). The reports must include each person's citizenship, geographic location of encounters, reasons for being in the database, immigration status, detention details, and removals - while keeping only the most sensitive security details classified. It directly affects federal agencies (Justice and Homeland Security) and congressional oversight committees, aiming to increase transparency around national security screenings. The law mandates these reports starting 30 days after enactment, with immediate notifications for new encounters within 96 hours.