Below is a sampling of some think tanks and policy/research institutes who focus on criminal justice issues:
One of the easiest ways to find government information is via Google: After you type in your keywords, then type: site:.gov
This will narrow your search to only federal, state, and local government resources.
For example, you could try the following keyword searches:
Use this guide for information on how to search in the Congressional interface, and for links to information on the digital collections.
Congressional Research Service (CRS) Reports
The Congressional Research Service (CRS) is a division of the Library of Congress. They produce analytical, non-partisan reports on topics of interest to members of Congress. In 2018 they stood up a public website for dissemination of their more recent reports, and there are a number of free and subscription sites where you can find current and older CRS reports. You can also request copies from your Congressional Representative.