NSPD-17 / HSPD 4 [unclassified version]:
National Strategy to Combat Weapons of Mass Destruction
December 2002
https://fas.org/irp/offdocs/nspd/nspd-17.html
Codified by Congress making its statutory law. Mostly still classified.
Not a single statute is referenced.
It is a strategy. The strategy calls on Congress “to consolidate and modify existing sanctions legislation”