This is a useful resource to pass along, Open CR provides free Congressional Research Reports on a range of topics. Here’s a piece from the about section:
A project of the Center for Democracy & Technology through the cooperation of several organizations and collectors of CRS Reports, Open CRS provides citizens access to CRS Reports already in the public domain and encourages Congress to provide public access to all CRS Reports.
If you go to this site, enter a search, and they might have a useful report on your topci.