The Congressional Research Service has updated its Congressional Oversight Manual. The 150-page document describes the tools and procedures that Congress has at its disposal to perform the oversight function.
Other noteworthy new CRS reports that Congress has withheld from online public distribution include the following:
The Political Question Doctrine: Justiciability and the Separation of Powers, December 23, 2014
Human-Induced Earthquakes from Deep-Well Injection: A Brief Overview, December 22, 2014