I found this video on the Government Accountability Office website. It tells what GAO does through short news clips that appear in my total layman's opinion to be well within traditional fair use guidelines. As a video produced by the Government Accountability Office, an arm of the US Government, the video itself should be public domain.

Because of this analysis and because I think the GAO story is too good to stay locked up in a corner of its web site, I posted the video to YouTube, which is the embedded video here. For preservation purposes and just in case that YouTube doesn't agree with my analysis of the copyright status of the video, I also posted it to the Internet Archive, which is a fierce supporter of the public domain and fair use.