Data Caveats and User Authorization

[joffreypeters]

Description
Some government data comes with caveats: for example FOUO or PROPIN which stand for "for official use only" and "proprietary information" respectively. This data should be handled differently in some circumstances, and in some cases should not be accessible by certain users. These data sources' caveats should be traced through the system and applied to final products where relevant. If possible and within the scope of this project, access should be restricted to unauthorized users.

Additional context
Classification and caveat markings are required in many government use contexts. For example, a data product which includes an FOUO data source, but for which all data sources are unclassified should be marked as (U//FOUO) or (UNCLASSIFIED//FOUO), so that users are aware of classification and caveats and can treat that data appropriately.