DHS - Department of Homeland Security

Regulatory.  "The Department of Homeland Security has a vital mission: to secure the nation from the many threats we face. This requires the dedication of more than 240,000 employees in jobs that range from aviation and border security to emergency response, from cybersecurity analyst to chemical facility inspector. Our duties are wide-ranging, and our goal is clear - keeping America safe. 'With honor and integrity, we will safeguard the American people, our homeland, and our values.'"

CFATS - The Chemical Facility Anti-Terrorism Standards (CFATS) program identifies and regulates high-risk chemical facilities to ensure they have security measures in place to reduce the risks associated with these chemicals.

6 CFR Part 27 - The Federal Register, Part II: Department of Homeland Security - Appendix to Chemical Facility Anti-Terrorism Standards; Final Rule lists chemicals of interest (COI) and their screening threshold quantities (STQs) that have been determined to be a high level security risk.

CVI Training - Safeguarding Information Designated As Chemical-terrorism Vulnerability Information (CVI)

Reducing the Threat of Improvised Explosive Device Attacks by Restricting Access to Excplosive Precursor Chemicals, Consensus Study Report Highlights, November 2017