Controlled Unclassified Information (CUI) is a category of unclassified categories issued in a directive on May 9, 2008, by President George W. Bush. CUI replaces categories such as For Official Use Only, Sensitive But Unclassified and Law Enforcement Sensitive categories. The CUI Program was originally developed for all Executive Branch Agencies but there are dozens (hundreds?) of older markings used to identify what’s now considered CIU, and the category of information is (intentionally?) defined in VERY broad terms.