Presidential Decision Directive 62 (PDD-62), Protection Against Unconventional Threats to the Homeland and Americans Overseas (May 22, 1998) (Unclassified abstract).
In May of 1998, President Clinton issued Presidential Decision Directive 62 (PDD-62). This Directive created a new and more systematic approach to fighting the terrorist threat. It reinforced the mission of the many U.S. agencies charged with roles in defeating terrorism; it also codifies and clarifies their activities in the wide range of U.S. counterterrorism programs, from apprehension and prosecution of terrorists to increasing transportation security, enhancing response capabilities and protecting the computer-based systems that lie at the heart of America's economy.
PDD-62 also establishes the Office of the National Coordinator for Security, Infrastructure Protection and Counter-Terrorism.
In 2000, the Presidential Protection Act of 2000 became public law. Included in the bill, signed on December 19, 2000, was an amendment to 18 U.S.C. §3056, which codified PDD-62.