: Congress passed the USA PATRIOT Act and the Public Health Security and Bioterrorism Preparedness and Response Act of 2002 to tighten control over biological agents.
The attacks permanently altered American life and national security:
The 2022 documentary The Anthrax Attacks: In the Shadow of 9/11 on Netflix provides a detailed look at this era of paranoia through archival footage and dramatic re-enactments starring as Bruce Ivins. Amerithrax or Anthrax Investigation - FBI